Non-stop, 'Unfixable' Virtumonde Issues

For the past five days I've had a sudden problem with random popups slowly opening in the background (in some cases I can't even see the open browser tab on my Start menu bar but hear audio from an ad). This issue of ads popping up is happening absolutely non-stop and occurs every 30 seconds or when I start my browser.

After some research I've come to the conclusion that my issue is in some way related to the Virtumonde malware. I've run Spybot Search & Destroy (came up with some Virtumonde and Smitfraud results and I removed them, but the problems are still present), Ad-Aware, ATF Cleaner (cleaned everything), Registry Mechanic, and AVG Free edition. No dice, the problems still exist.

All of the ads are opened at a random URL that always begins with "url.adtrgt.com/".

Following the "READ & RUN ME" guide, I did the following:

• Removed any shady or unknown programs from Add/Remove Programs
• Updated my Sun Java (was already up to date)
• Set Msconfig to Normal Startup Mode
• Emptied ALL Quarantine folders for all antivirus programs
• Downloaded and ran CCleaner
• Enabled viewing of hidden files and folders

I also downloaded and tried VundoFix and Malwarebyte's Anti-Malware. VundoFix came up with 0 results and thus was unable to fix anything, and Malwarebyte's Anti-Malware detected Virtumonde and I deleted it, but the issues are still occuring on my PC.

I've attached my HJT (HijackThis) log to this post.

Additional system information:

Lenovo ThinkPad T61p
Windows XP SP3

Any and all help is appreciated!