[clueless in Georgia]

I started getting this message about 10 days ago and have tried to handle it myself the first thing I noticed after I downloaded what I think was A windows update or it said it was anyways.
I rebooted my pc and defrag. as I was heading out for the day, when I came home I found my pc telling me my IE had A bad image IE wouldnt even load correctly without the errors ,yahoo messenger is still not loading and its the only thing that isnt saying Bad Image. It will not let me create A system restore the page comes up blank. before I started running the different scans everything I tried to click on would say Bad Image, Bad Image! errr frustrating I tell you. I have ran malware scans,Advanced windows care,virus, x-soft spy you name it I have probably ran it. this was the latest message I got this Morning after trying to create another windows user.
I have done everything on the before posting page and still the same thing.
any help would be greatly appreciated.
** calgon take me away**
rstrui.exe-Bad Image
the application or DLL C:\WINDOWS\System32\jscript.dll is not a valid Windows image.Please try your installation diskette.