Top Products
For the best protection, get a hardware firewall (a wired or wireless router with firewall features) and either an Internet security suite or individual security products... personal firewall, anti-virus and anti-spyware.
D-Link DIR-655 Extreme N Wireless RouterZonealarm Pro 2009Linksys by Cisco BEFSX41 EtherFast Cable/DSL Firewall Router (4-Port 10/100 Switch / VPN Endpoint)
D-Link DIR-655 Extreme N Wireless Router
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Highly Rated Wireless Router, has both SPI & NAT firewalls
Zonealarm Pro 2009

Great Personal Firewall
Linksys by Cisco BEFSX41 EtherFast Cable/DS...
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Wired Firewall Router Low Cost+Dependable
PC Tools Spyware Doctor 2009Eset Nod32 Antivirus V.4.0Norton Internet Security 2010 1-User/3PC
PC Tools Spyware Doctor 2009

Great Anti-Spyware
Eset Nod32 Antivirus V.4.0
$49.99
Great antivirus
Norton Internet Security 2010 1-User/3PC
$33.99
Fast comprehensive protection