Start with this --
For every User listed under C:\Documents and Settings, delete the entire contents of these folders (not the folders themselves):
Local Settings\Temp
Cookies
History
Local Settings\Temporary Internet Files\Content.IE5
Delete the entire contents of your C:\Windows\Temp folder.
Delete the entire contents of your C:\Temp folder (if you have one).
Do a search for *.tmp and delete all entries found.
Go to Start, Run, and type in cleanmgr, and then click OK. Select the drive XP is on, and check the boxes for Downloaded Program Files (move any files you wish to keep out of this folder first), Temporary Internet Files, Recycle Bin, Temporary Files, Temporary Offline Files, Offline Files, (and Compress old files & Catalog files for the Content Indexer if you wish), and then click OK. Click Yes to confirm you want these files deleted. It may take awhile for this to run, please be patient.
Note: if any of these temporary files cannot be deleted while in normal mode, try Safe Mode.
Run a at least two of these free online anti-virus/anti-spyware scans and have them clean what they can:
http://www.kaspersky.com/scanforvirus.html
http://housecall.trendmicro.com/
http://us.mcafee.com/root/mfs/default.asp?cid=9914
http://www.ravantivirus.com/scan/
http://www.bitdefender.com/scan/licence.php
If AVG will find the entries, but not fix them, it should give you the locations so you can navigate to them and delete them manually.
Empty your Recycle Bin and Reboot.
Right-click in an open area of your desktop and select New, Folder; give the new folder a name (something like HJT or HijackThis), and then drag the hijackthis.exe icon that is on your desktop into the new folder.
Close any open browser windows, scan with hijackthis, and post a new log please (and next time could you please not italicize it; makes it hard for me to read).