If you need help lmk, Im friends with alot of people who code for a living and many of them started out writing trojans in vb(visual basic, not virginia beach). that said, look at the process list, and see what is using up your computers resources(clock cycles), if a process is being a hog and looks suspicious, google it. I'd also open up dos prompt and see what connections are active(will show if your computer is being used as a drone).