the best AntiSpyware product... 
From Lavasoft:
With the ability to scan your RAM, Registry, hard drives, and external storage devices for known data-mining, advertising, and tracking components, Ad-Aware 2007 easily can clean your system, allowing you to maintain a higher degree of privacy while you surf the Web.

Ad-Aware 2007 includes a redesigned engine, improved code sequence identification, incremental definition updates, one-click Web-history cleanup, multiple browser support, and other new features.

 the best AntiVirus product... 
From AVG Technologies:
This antivirus program for your home or office computer is easy on system resources and simple to install and use. The fully automated update process will keep your computer protected at all times.

Components include AVG Email Scanner, which checks your incoming and outgoing e-mail for viruses; AVG Resident Shield, which checks for viruses as files are opened, executed, and saved and will prevent you from opening or running an infected file; and AVG Virus Vault, a place where infected files are isolated so they cannot cause damage to your system.

 the best Firewall product... 
From ZoneAlarm:
ZoneAlarm Pro 7 augments your existing Antivirus solutions. ZoneAlarm Pro adds powerful, multi-layered security and additional protection. Includes Operating System Firewall, Network and Program Firewall, Anti-Spyware, Identity Theft Protection.