Virus problem, what do I do next?

I've been fighting vundo for a couple of weeks now. It started with a message a couple of weeks back. I quickly shut-off my computer and unplugged from internet. I logged back on and had an additional, password protected username on my windows log-in page so I quickly deleted that username. After that, I got buy for awhile but then I couldn't get windows to start-up (computer would just lock-up and eventually beep once before mouse freezing). I was able to get into safe mode (don't ask me how because I know nothing about computers) to get windows back up briefly, restore to a previous date, and get some updated malware/spware programs from the net. Since then, I've been using AVG and Malwarebytes. My last few scans have found no viruses but I'll still get slow operation as well as my firewall being turned off and occaissional problems with updating spyware programs so I get the feeling I still have some problems.

What next?

Please update Malwarebytes. This time do a FULL scan and post the new log here

Here it is. I don't think this tells us much.

Malwarebytes' Anti-Malware 1.31
Database version: 1497
Windows 5.1.2600 Service Pack 3

12/13/2008 6:11:32 PM
mbam-log-2008-12-13 (18-11-32).txt

Scan type: Full Scan (A:\|C:\|D:\|E:\|)
Objects scanned: 139376
Time elapsed: 1 hour(s), 18 minute(s), 28 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)