[k_0t1k]

Every one of his trainers are L E G I T.
your virus program says its a virus because
trainers modify code and (Inject changes in memory resident prog/stuff)
that the game is using. it has to do this to make changes for cheats.

the virus program sees the changes and it don't comply to original. The AV program, thinks its a virus.

viruses do this to change your stuff also so it puts all of these changes in
a virus category. It Is NOT a VIRUS.

if you are that scared about viruses don't use it.

if you have a game that is Games for windows live, the problem why it wont
work is a "hotkey" his hotkey to activate his trainer is usually "home key"
if game loads and it is windows live, it uses "home Key" to pull down window for gfwl.
Fix, go to your GFWL and change settings and pick "Shift Home"
then it will work.

think about this, I put a game out, thousands or millions, my people would tell me about the cracks etc...
they would submit fixes and patches for game, some would include stuff to circumvent the old cracks.
only update a game if you have to. right click on .exe file and go to details to see your version,
search online for that fix.