I recently discovered whole different world of freeware software (didn't have a time, or serious threat..lol). Me (Vista)and wife (XP) have laptop each. I had TrendMicro with expiration, hers Webroot AV w/AM and free Firewall. She also had Northon scanner (I find out she also had expired TrendMicro full software expired!!!). At the same day my TrendMicro expired, her Northon scanner find out some a lot bad stuff. So, I was thinking about renewing subscription but stumbled on some great reviews about free security software and installed: -(on Vista) avast! Home edition, and SAS, MBAM, with Windows Defender(it was there already). -(XP) SAS, MBAM, WOT, SpyBlaster - left WAVAS; uninstalled Norton, TrendMicro (everything!) I really need your opinion about what Firewall (freeware possibly, other than Windows) has most compatibility for: -XP (it's runnig with Webroot Firewall, WindowsFirewall disabled? -Vista (Windows Firewall on) I really apologize for such a loooooooooooooong Comment, but this is GREAT, knowledgable forum that I trust. Thank you, Gor Anilic P.S. I have linksys Wireless router WCG200 - does it comes with Firewall?