Malwarebytes' Anti-Malware
You might find downloading/installing any of the trojan removers fails with the trojan killing installers it recognises. If the download fails, do the download on a clean computer and copy the installer across - preferably on read only media like a CD. If there is an update file put it on the media too. Malwarebytes has one on the download page under "Recent Updates in Anti-spyware".
If the installer dies, renaming it and rerunning usually works. It is not uncommon to have to run the cleaner once, reboot, run again and reboot. Keep rerunning until you get a couple of clean passes and reboots.
You might also find running a couple of different removers find different things.