Welcome back Jeff!
Well looking through your log I have noticed you have the 'W32.Xabot.Worm' which is a worm that attempts to spread itself through the IRC and file-sharing networks. It also has backdoor Trojan Horse capabilities, which allows a hacker to gain control of a compromised computer.
Sometime with these kinds of infections, your computer is compromised so much it can never be trusted again.
I suggest since that you recently reformatted and it doesnt look like you have many programs installed that you reformat again.
Also if you do online banking I suggest you change your password from another PC.
I also notice that you have :
No firewall
No anti virus
No sp2 + possibly other critical windows updates.
If you do reformat again make sure you have a firewall, anti virus and all windows updates.