So as stated above DK2 has some resolution issue where it has an issue fitting to my screen, It didn't use to have this and i tried all 3 res setting in game to try and get it to fit to my screen, as a game that's very immersive, this is very immersion breaking for me and I'd love to have it fixed. Anyone got any ideas?

Dungeon Keeper 2 doesn't support widescreen resolutions. However you can set almost any resolution through registry (via C:\Windows\regedit.exe): HKEY_CURRENT_USER\Software\Bullfrog Productions Ltd\Dungeon Keeper II\Configuration\Video
In keys "Screen Width" and "Screen Height".

But you should know that on non-standart resolutions you can have (I had) some problems with the game (strange cursor movement, no text near buttons on pause menu, incorrect interface's position). In my opinion, it's best to keep 4:3 resolution, becasue at least strange cursor movement can be bothersome.

Also, if you can't stand black areas on sides of the screen and don't want problems of custom resolution, you can leave standart resolution and enable "fit to screen" option in video driver. It will stretch image to fit your display, though it will be look stretched.

Hmmm I will give that a try, I just don't understand, I didn't used to have this problem and the only thing i have changed is my graphics card drivers. I think Ill try the fit to screen method. but if anyone else has anything else to add I'd be eternally grateful