Welcome to P2P-Zone, John Smith.
For spyware removal I recommend
SpyBot Search&Destroy.
Ad-Aware is another popular spyware remover.
Many commercial p2p applications come infested with spyware (various programs that spy on your surfing habits etc. and 'call home' to deliver the collected personal data), and keeping your computer spyware free is an important security measure.
- tg