Do you know what Pest Trap is?
Pest Trap is a rogue anti-spyware program that uses scare tactics in an attempt to get users to purchase the full version of Pest Trap. Pest Trap may scan your computer at startup displaying exaggerated scan results. The name says it all, Pest Trap is nothing but a pest and a trap because it is deceiving in the fact that it does not actually remove spyware from your computer.
In non-techie terms: Distributors of rogue anti-spyware such as Pest Trap conduct illicit installation methods to extort money from you. Do not under any circumstances download or purchase the Pest Trap program. It is not a legitimate spyware removal tool.