[clubj]

In my honest opinion, trojans are "overrated" and people just get totally freaked out by anything that could possibly be a "trojan". First of all, many of the things virus scanners pick up are just suspicious files that you download from random sites, maybe a crack site or something. Second of all, even if you have an exe file on your computer, as long as it isnt executed, it will do nothing. Third, most of these trojans are just infected with a code that has the potential to compromise a system, but the chance of someone actually keeping track of it or being able to keep track of it is very rare. Fourth, if you have a firewall and a router, you are probably at extreme low risk.

Lastly, a format couldn't hurt but I would call it unnecessary unless you actually see something happen which I doubt.