Yes, I made sure I was using the right serial number. This is what i'm using for the windows version of PS CS2. (1045-1412-5685-1654-6343-1431) you can compare it to the site if you want. Do you think I should try typeing it in manuely insted of just copy/paste the serial number?
Edit: Just tried typing it manuely and that didn't work either.