Download these programs:
AVG Free edition
http://free.grisoft.com/doc/1Spybot: Search and Destroy
http://www.safer-networking.org/en/download/Lavasoft Adaware
http://www.lavasoft.de/software/adaware/HijackThis
http://www.spywareinfo.com/~merijn/Then, boot windows into safe mode, and run Spybot and Adaware. If they don't suceed in removing Spyfalcon, then AVG free might, although its primarily anitvirus. Finally, if its still there, run hijackthis, and either post your logfile, or research any suspect processes you see in your logfile.
Oh, and you can terminate the spyfalcon processes in task manager, heres a list of them:
atmclk.exe, dcomcfg.exe, dfrgsrv.exe, mscornet.exe, mssearchnet.exe, nvctrl.exe, spyfalcon.exe