At various points you state that this is a a Trojan and a Virus which are both totally different things..

Take this computer off the internet at the moment because the exploit may have a key logger :-

Can you check your windows registry for the following key :-
( You enter the registry by going to Run and typing regedit )

And tell me if that information stated above is there as this will establish what exploit you have as the process being used means it can either be a keylogging worm or a irc trojan