Hello..

I am unable to open any applications. It gives me the error message:

"The file does not have a program associated with it for performing this action. Create an association in the Folder Options control panel."

I performed a HiJack This! scan and here are the results:

Logfile of HijackThis v1.98.2
Scan saved at 1:18:57 AM, on 09/27/2004
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\COMMON~1\AOL\ACS\acsd.exe
C:\PROGRA~1\SYMANT~1\SYMANT~1\DefWatch.exe
C:\PROGRA~1\SYMANT~1\SYMANT~1\Rtvscan.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\wanmpsvc.exe
C:\Program Files\WZCBDL Service\WZCBDLS.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\AIM95\aim.exe
C:\Program Files\Messenger\msmsgs.exe
C:\PROGRA~1\MOZILL~1\FIREFOX.EXE
C:\Documents and Settings\Owner\Desktop\HijackThis19802.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/.../search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://yahoo.sbc.com/dsl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/.../search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
N3 - Netscape 7: user_pref("browser.startup.homepage", "www.yahoo.com"); (C:\Documents and Settings\Owner\Application Data\Mozilla\Profiles\default\3y5bki94.slt\prefs.js)
N3 - Netscape 7: user_pref("browser.search.defaultengine", "engine://C%3A%5CProgram%20Files%5CNetscape%5CNetscape%5Csearchplugins%5CSBWeb_01.src"); (C:\Documents and Settings\Owner\Application Data\Mozilla\Profiles\default\3y5bki94.slt\prefs.js)
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_5_5_0.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn0\ycomp5_5_5_0.dll
O3 - Toolbar: Dictionary.com - {11359F4A-B191-42D7-905A-594F8CF0387B} - C:\WINDOWS\Downloaded Program Files\CONFLICT.1\lexbar.dll
O3 - Toolbar: (no name) - {ECA326B0-6A59-4DB6-897E-6FED08BC3D98} - (no file)
O4 - HKLM\..\Run: [hpsysdrv] c:\windows\system\hpsysdrv.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [D-Link Air USB Utility] C:\Program Files\D-Link\Air USB Utility\AirCFG.exe
O4 - HKLM\..\Run: [YBrowser] C:\Program Files\Yahoo!\browser\ybrwicon.exe
O4 - HKLM\..\Run: [IPInSightMonitor 01] "C:\Program Files\SBC Yahoo!\Connection Manager\IP InSight\IPMon32.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [vptray] C:\PROGRA~1\SYMANT~1\SYMANT~1\vptray.exe
O4 - HKCU\..\Run: [System Mechanic Popup Stopper] "C:\Program Files\iolo\System Mechanic 4\PopupStopper.exe"
O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM95\aim.exe -cnetwait.odl
O4 - HKCU\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /0
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: hp psc 2000 Series.lnk = C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpobnz08.exe
O4 - Global Startup: hpoddt01.exe.lnk = ?
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O8 - Extra context menu item: Search &Dictionary - C:\Program files\Lexico\Toolbar\dictionary.htm
O8 - Extra context menu item: Search &Thesaurus - C:\Program files\Lexico\Toolbar\thesaurus.htm
O9 - Extra button: Yahoo! Login - {2499216C-4BA5-11D5-BD9C-000103C116D5} - C:\Program Files\Yahoo!\Common\ylogin.dll
O9 - Extra 'Tools' menuitem: Yahoo! Login - {2499216C-4BA5-11D5-BD9C-000103C116D5} - C:\Program Files\Yahoo!\Common\ylogin.dll
O9 - Extra button: ATI TV - {44226DFF-747E-4edc-B30C-78752E50CD0C} - C:\Program Files\ATI Multimedia\TV\EXPLBAR.DLL
O9 - Extra button: Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmes0521.dll
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {4528BBE0-4E08-11D5-AD55-00010333D0AD} - C:\Program Files\Yahoo!\Messenger\yhexbmes0521.dll
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Program Files\AIM95\aim.exe
O9 - Extra button: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyPoker\IEExtension.dll
O9 - Extra 'Tools' menuitem: PartyPoker.com - {B7FE5D70-9AA2-40F1-9C6B-12A255F085E1} - C:\Program Files\PartyPoker\IEExtension.dll
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - c:\Program Files\Microsoft Money\System\mnyviewer.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: JT's Blocks - http://download.games.yahoo.com/games/clients/y/blt1_x.cab
O16 - DPF: Yahoo! Blackjack - http://download.games.yahoo.com/games/clients/y/jt0_x.cab
O16 - DPF: Yahoo! Chat - http://us.chat1.yimg.com/us.yimg.com/i/cha...t/c381/chat.cab
O16 - DPF: Yahoo! Euchre - http://download.games.yahoo.com/games/clients/y/et1_x.cab
O16 - DPF: Yahoo! Graffiti - http://download.games.yahoo.com/games/clients/y/grt5_x.cab
O16 - DPF: Yahoo! Poker - http://download.games.yahoo.com/games/clients/y/pt1_x.cab
O16 - DPF: Yahoo! Pool 2 - http://download.games.yahoo.com/games/clients/y/potd_x.cab
O16 - DPF: Yahoo! Spades - http://download.games.yahoo.com/games/clients/y/st2_x.cab
O16 - DPF: Yahoo! Spelldown - http://download.games.yahoo.com/games/clients/y/sdt1_x.cab
O16 - DPF: Yahoo! Trivia - http://download.games.yahoo.com/games/clients/y/tvt0_x.cab
O16 - DPF: {09C6CAC0-936E-40A0-BC26-707480103DC3} (shizmoo Class) - http://www.uproar.com/applets/activex/shiz...pside_web18.cab
O16 - DPF: {17D72920-7A15-11D4-921E-0080C8DA7A5E} (AimSp32 Class) - http://makeover.substance.com/save/makeover.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/...nst20040510.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://software-dl.real.com/282bded14a56cf...ip/RdxIE601.cab
O16 - DPF: {665585FD-2068-4C5E-A6D3-53AC3270ECD4} (FileSharingCtrl Class) - http://appdirectory.messenger.msn.com/AppD...sharingctrl.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/Messe...StatsClient.cab
O16 - DPF: {90C9629E-CD32-11D3-BBFB-00105A1F0D68} (InstallShield International Setup Player) - http://www.installengine.com/engine/isetup.cab
O16 - DPF: {CA034DCC-A580-4333-B52F-15F98C42E04C} (Downloader Class) - https://www.stopzilla.com/_download/Auto_In...ller/dwnldr.cab
O16 - DPF: {CE28D5D2-60CF-4C7D-9FE8-0F47A3308078} (ActiveDataInfo Class) - https://www-secure.symantec.com/techsupp/ac...ta/SymAData.dll
O16 - DPF: {D18F962A-3722-4B59-B08D-28BB9EB2281E} (PhotosCtrl Class) - http://photos.yahoo.com/ocx/us/yexplorer1_9us.cab
O16 - DPF: {D719897A-B07A-4C0C-AEA9-9B663A28DFCB} (iTunesDetector Class) - http://ax.phobos.apple.com.edgesuite.net/d.../ITDetector.cab
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://zone.msn.com/bingame/zuma/default/popcaploader_v5.cab
O16 - DPF: {E77C0D62-882A-456F-AD8F-7C6C9569B8C7} (ActiveDataObj Class) - https://www-secure.symantec.com/techsupp/ac.../ActiveData.cab
O16 - DPF: {EDFCDAF5-95D9-40E9-BBE6-10C33190C3EF} (cGameControl Class) - http://zone.msn.com/bingame/rmcb/default/RumbleCube.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/iss-loc/...390/mcfscan.cab
O16 - DPF: {F0E2D69A-DC2F-4E9B-A993-684FB1C21DBC} - http://dictionary.reference.com/tools/toolbar/lexico.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://chat.msn.com/bin/msnchat45.cab

Please run a free online virus scan here (tick the "Auto Clean" checkbox):
http://housecall.antivirus.com/

And a free trojan scan here:
http://www.moosoft.com/

Please reply with the results.