here's my 2 cent. I've posted this link in quite a few other threads but here it goes:
http://www.glocksoft.com/

the name of the tool is called "Advanced Administrative Tools" and its a must have for any sys admin or anybody in general. At the website you can download a 45 day evaluation and u can purchase it if you like it. It has a crapload of utilities u can use. ALthough some of those utilities u can get for free off the net, i think this is a very useful program to have. In the website you can also find a HUGE list of trojan horses and what they infect. You cant download them of course but you can get information about them and maybe you can protect yourself. "KNOW YOUR ENEMY".

Cheers,

BTW. GREAT POST MAN, This will come in very handy.