There are a few websites that talk about how to protect your computer
from virus and Spies. If I were you, I will install anti virus software
like from http://www.symantec.com or http://www.mcafee.com
This document linkwill help you enough:
http://gnwda.org/protection.htm
Also, back up your important data from time to time.
BACK UP, BACK UP and BACK UP.
Regards,
Richard Tan
Tech Forum