Other Security Suites to Consider: VIPRE, Outpost, Trend Micro and BitDefender
Agnitum's Outpost Security Suite - The personal firewall protection of Agnitum is one of the best firewall software available. Its anti-malware and content protection is also receiving awards.
Price: $50/3 PCs. There is a promotion from Agnitum which has it available for half-price! System requirements: Windows 7, Vista, Windows XP, Windows Server 2003/2008 and Windows 2000 SP3/SP4.
VIPRE Antivirus Premium - Kerio Personal Firewall is the unforgettable firewall program recommended by most of us in the security community. The firewall is now owned by Sunbelt and has been renamed Sunbelt Personal Firewall. They've added this firewall into the VIPRE Antivirus Premium suite. There's no question as to how well VIPRE Antivirus will protect, because Sunbelt researchers are well known for scouring the net to stay vigilient against new threats.
Price: $30/1 PC or $50/up to 10 PCs. System requirements: Windows Server 2008/2003, Windows 7, Vista, XP and Windows 2000 SP4.
BitDefender Internet Security Suite - BitDefender offers Antivirus protection, a vulnerability scanner and a firewall program. It works well as long as you don't allow it to automatically handle found threats. It's best to review just what it detected, as I find BitDefender's false positive detections to be a big issue.
Price: $50/3 PCs. System requirements: XP, Vista and Windows 7.
Trend Micro Internet Security Suite Pro - Comprehensive firewall protection with daily updates of pattern files for protecting against Trojans, viruses, rookits, adware and other types of malware.
Price: $70/3 PCs. System requirements: XP, Vista and Windows 7.