Is there a way to get 1080p with this game?

Yes, well, sort off. You need to modify the registry; go to "start", type regedit and enter the program. There, look for HKEY_CURRENT_USER->Software->Bullfrog Productions Ltd->Dungeon Keeper II->Configuration->Video--->

>Screen Height: choose Decimal and your desired height
>Screen Width: choose Decimal and your desired width

That should do it. Beware that in game option menu's will disappear and letters will look ultra small.