Sometimes it feels like programs that promise to protect your system are as malicious as the viruses and spyware they warn about. PC Tool's Spyware Doctor with AntiVirus is an excellent security tool that does exactly what it says, and safely.

Upon installation, Spyware Doctor with AntiVirus will perform an 'Intelli-scan', which is a preliminary check of your system for bad files. This is surprisingly fast, and gives excellent results. If you want to fix the problems it finds, you'll need to purchase a registration key.

Spyware Doctor with AntiVirus can also perform a deeper, full scan, although in our tests, the Intelli-scan was thorough enough. Scans can be scheduled automatically, and after fixing problems, your computer will be rebooted and scanned again.

To reduce irritation, Spyware Doctor with AntiVirus halts all interruptions if you're playing a full-screen game. On a laptop it will postpone resource-hungry tasks when on battery power. It also installs a range of effective guards, to protect against malicious websites, downloads and attacks.

If you're looking for an effective anti-spyware and virus protection application, Spyware Doctor with AntiVirus 2010 is an excellent choice.