http://bugs.winehq.org/show_bug.cgi?id=14874
--- Comment #14 from Xavier Vachon xvachon@gmail.com 2008-08-16 12:19:59 --- (In reply to comment #13)
Okay I recreated the error that you posted at the start of this bug post.
DDERR_INVALIDPARAMS in file: D:\MM7Src\MM7\Code\Screen16.cpp at line number: 2320
The above error you will receive if you're running windows version 98 (Compatibility Mode), and under Might and Magic VII Setup have chosen software mode. Leave the windows version 98. If you change to Hardware Mode and try to run the game then this will work. You need to hit escape at the 3D0 Movie, after you make your character and the loading screen between the character or your game will crash because of the movies.
With the unofficial patch, the Windows version compatibility set to Windows XP and the corrections you mentioned, now the game loads for me. I will try to play a little and see what happens. Do you think there is a way to solve the movies however? There is a decent bunch of them in the game, therefore it might be troublesome to try to skip every single one of them.