How to manually check and remove Malware on windows xp?

Hi, my Norton antivirus has scanned for malware, and nothing was found, but yet I was recently hacked in something. How can I manually search and destroy malware? I have a windows xp, I can provide further information if needed. I suspect I have no malware, everything works correctly, but I would like to be sure, how can I check?|||I suggest try the link below








10 easy step virs and spyware removal using free tools


http://www.review-ninja.com/2008/08/10-e鈥?/a>