I did what Dakkar had said, but there's an error saying that the steamclient.dll is not found. I checked the files and it's actually there, but the game doesn't load up. Anyone willing to lend a hand?
copy crack -> paste to postal 3 folder (where you see the launcher p3.exe) -> launch game and wait for few mins as the exe hangs for a while (seems more like freeze) tho eventually it will start.. now quit bitching for free stuff
Torrent here