sure, you'll send them an email and simply ask that you would like a non-profit license (pro as well)
hint: the coupon also works when upgrading - 50%+30%=80%
for first time user, well.. 30%off for non-profit
maintenance periods, i recall they are pretty long, you can look there at their changelog if interested
x86/x64, commandline support, works fine with windows 7