I'm new here so first of all i would like to say hello to all players of good, ol diablo.

I've got this problem - dl'ed belzebub, unzipped it, copied to diablo folder - everythings fine except for fact that diablo is running in windowed mode and dunno how to fix it. Any ideas?
I got windows7, tried to run as admin
EDIT: I want to run it in fullscreen, ofc