Hi wxman, Welcome to Geeks To Go!

what i whould first like for you to do is Update IE:
Repair Internet Explorer 6A number of XP users have reported situations with Internet Explorer 6 becoming corrupted and reporting a number of different errors. While there is certainly no guarantee, the two procedures listed below have restored functionality to IE6 for many users experiencing problems.
Note: Both methods listed require that the Microsoft Windows XP CD-ROM be available.
Method 1: Microsoft Internet Explorer 6.x Repair for Windows XP
From the
Start menu, select Run.
In the
Open field, type sfc /scannow (Note: There is a space between sfc and /scannow)
Select the
OK button.
Follow the prompts throughout the
System File Checker process.
Reboot the computer when
System File Checker completes.
Method 2: Microsoft Internet Explorer 6.x Repair for Windows XP
From the
Start menu, select
Search, select
All Files and Folders.
Select
More Advanced Options and place a checkmark beside
Search Hidden Files and Folders option.
Ensure that
Search System Folders and
Search Subfolders are also checked.
In the
All or Part of the File Name box, type ie.inf
In the
Look In drop-down menu, select C: or the letter of the hard drive that contains the
Windows folder.
Click the
Search button.
In the search results pane, find the ie.inf file located in Windows\Inf folder.
Right click the
ie.inf file and click
Install on the context menu.
Reboot the computer when the file copy process is complete.
Microsoft Knowledge Base Article - 318378
How to Reinstall or Repair Internet Explorer and Outlook Express in Windows XPUpdate XP
We can definitely help you, but first you need to help us. please update windows by going to the microsoft site, www.microsoft.com. Inorder to download the updates you will need to be running IE.
also i know that if i dont say it now one of my collegues will, here in the inernet and browsers fourm, whenever someone complains of a problem in IE it is almost garunteed one of the helpers will suggest the user should switch to firefox. and so i whould like to suggest that to you. firefox is more secure, and faster. and FREE. but if you whould like to stick with IE, i totaly understand.
After you have done all that please post back if you are still having problems.

hope this is helpful!
if this dosent work (unlikely), then i whould suggest that you do a temp dump, what could possibly be happaning is you are getting so many temp files stored up on your computer that your ram becomes full.
Temp Dump:
tools>internet options>general>under tempory internet files>settings>settings>view files> delete anything in there dont you recongnize, remember that not all temp files are bad, these include favorites, and saved passwords.
if you dont have any saved passwords or favorits then you can do a complete temp dump, but i do not recoment it unless you truly do not care about any of the temp files

:
Click start then control panel, click network and internet then internet options
On the general tab, click delete cookies, click delete files, include offline content, click clear history.
Click apply after each change.
Click the security tab and click default, click privacy and click default, click programmes and click reset web settings, click advanced to tick, do not save encrypted pages to disc and empty the temporary internet files folder when the browser is closed, click apply
Click start then run, type prefetch then press enter, click edit then select all, right click any file, click delete, confirm delete.
Click start then all programmes, accessories, system tools, to run disc clean up, reboot
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hope this is helpful, post back if you have any pproblems, or if it works.