Well hello from new jersey since i live there
But anyways, down to point. If there was as many trojans as you said and there is as much damage and problems happening right now, then your best bet would be to format. If your going to format, then you need to make sure that before you format your hard drive, you backup all important files like docs, music, vids, whatever. And then you can use your Operating Systems disc to choose the format option and then re-install it. Or you can use a thierd-party application to format the hard drive for you. But then nothing will be on the hard drive including the operating system. Formating would be the easiest, cleanest, and safest and free way to bring all of your things back to factory made positions.