Didn't you use to say you didn't run antivirus? *grin*
So for a windows solution there's a connect beta right now of System Sweeper - http://connect.microsoft.com/systemsweeper
Webplains doesn't seem to be using root kits though, from what I can see. Did you remove the system TDSSserve.sys hidden device first? And checked proxy settings once rebooted and scanned?