So i get commandos has stopped working everytime i try to start it up. I've disabled desktop composition, i have windows 7 basic on, XP service pack 2 visual themes and i'm running it as an admin... Nothing works, I get the same problem in the steam version :(

See if any of this stuff helps:
https://www.gog.com/support/commandos_2_3/crashing_in_general
The first section are the stuff I'd have suggested.

If not, open a ticket with support.