Although we all know that most hackers don't bother writing crappy viruses to attack us using Kazaa, there are some really bored computer nerds with no life and nothing else to do but F*@K with us , here are some links to tips to protect yourself from such dorks:
[this easy to configure (free for home users) program prevents crackers from installing their progs on your computer without your knowlege.
[you can watch your ports for suspicious activity]
Also, go to Black Vipers site to see what services you can disable. That is probably the best site here: