Have you tried booting to safe mode?
Running a PC when you know you're infected isn't generally a good idea as you found out, and it likely could have been cleaned with any number of free programs.
I would suggest downloading one of the many bootable virus scanners which will allow you to do a full scan and might clean up the mess.
Download Kaspersky Rescue Disk 10
Make sure you're hardwired to your LAN and do an update before you run it.