What a good site to get info on trojans

Oh man! Ad-blocking software has been detected! :'(

This website is run by the community, for the community... and it needs advertisements in order to keep running. Blocking our ads means your killing our stats!
Please disable your ad-block, or become a premium member to hide all advertisements and this notice.

I have a w33 trojan downloader agent trojan, I have googled there is 100's of site on how to delete it!
But I'm not after that.

I would like to known how it work? have read the wiki post
I know about trojan house spy on people blur blur But how it work? Does the downloader agent broadcast my ip address then it starts to down load trojains?

I was using AVG till today I was reading about NOD32 so tryed a 30 days try out.

Thanks