To tell you the truth these hacks work better on Win 7 than on any other os. Iam also using win 7 and all you have to do is:
1. Run the Avapub.exe as admin (right click, the Run as Adminstrator)
2. Then open up AVA until the reactor starts up, then sign into reactor, but dont start game yet.
3. Now click start on the Avapub hacks window, then wait tell the mpgh website is fully loaded and dont X out of it.
4. now you can start the game and it should work for you
5. Now when the game loads, you should see the Mpgh hacks words on the top left cornor, then hit the Delete button on keyboard for the hacks menu to come up
(just incase try the insert button too if Delete dont work for you)