if you want to use it as a mask create a layer mask on a new layer and paste the map into it. to get directly into the mask alt click it and then do the paste op. anything in this layer will be masked by the AO map. its a great way of doing grime.
ok so i got a new vid from eat3d, the highpoly bulldozer. ive been trying to use his render and photoshop methods but i've run into a snag i cant figure out i did it once but cant for the life of me replicate it lol So according to him i take the AO, add the AO as an alpha. however every time i try adding it as an alpha it…