It looks like it was some sort of spyware, that got partially removed, but the entry to allow it to autostart at Windows load remained. Recheck the Start Up portion of msconfig to see if you can find the same file, also check your Start->Programs->Startup Folder. If it is not in either of those, the entry is likely in your registry, and since most people don't like to go snooping around in there, I would just try Ad-Aware and Spybot S&D to ensure it is gone.