# Webroot Internet Security Essentials 2010 (Windows XP SP3) # PrevX 3.5 (Vista SP1) # Spyware Doctor 6.1.0.447 (Vista SP1) # Bit Defender AntiVirus 2010 (Vista SP1) # Threatfire 4.5.24 (Vista SP1) # Sunbelt VIPRE 3.2.2 (Vista SP1) # QuickHeal AntiVirus Plus 10.0 (Vista SP1) # A-Squared Free (Vista SP1) # BluePoint Security 1.0.0.68 (Vista SP1) # AhnLab V3 Intern Security 8.0 (Vista SP1) # BullGuard 8.7(Vista SP1) # Online Armor (Vista SP1) # Symantec Endpoint Protection 11.0 (Vista SP1)