I always run the trainer after the game is on, still doesn't work except for those twoActually, the cheats do work. The trick is to launch the trainer AFTER launching the game. Otherwise, you only have a 50/50 chance of the trainer actually working. You'll know it's not working if you don't hear "trainer activated" or "cheat activated" when you press any of the hotkeys.
Trainers actually alter the data present in the game to give you cheats. There is no actual virus but since it hacks the data, your anti-virus starts ringing. Its a false positive. Don't worry.When I try downloading the trainer my anti-virus says "We have found that there might be viruses, spyware, or other potentially unwanted programs in the file you are trying to download." ... I'd rather ask if the file truly is safe rather than screw up my crap.