Avira Personal A/V, Avast! 4 Home Suite, Outpost Free Firewall,
Free scanners/removers (no real time guard) Malwarebytes Anti-malware (MBAM.exe)(now has paid protection module for 64 Bit) SuperAntiSpyware (SAS)for personal use.
http://www.agnitum.com/ (Outpost Firewall)
Also CCleaner Basic/Slim (No TB) http://www.ccleaner.com/download/builds (check re: 64 Bit!)
More might include AVG, Zone Alarm, plus various paid . Be SURE
to uncheck any included TOOLBARS BEFORE install or choose TB free version if offered.
ALWAYS download any offered specific REMOVAL TOOL for any product you plan to try to get leftovers out before next product install.
I have just installed Windows XP X64. Is there any Security programs available? I mean Firewall and Virus, etc. Ones you have to pay for or Free.