I've not actually bought DK 2 from GOG as I still have an old copy hanging around but I was inspired to dig it out and load up in a fit of nostalgia. I also experienced problems playing in Windows 7 - specifically blocky graphic corruption. However, this seems to be a graphics card/DX issue rather than a W7 problem. I found turning off the hardware accelarator didn't seem to do the trick as it just defaulted back on again. I did find a solution, afraid it means editing the registry - as always, take care when editing your registry - you do so at your own risk. I suggest you back up your registry first before messing with it. Open up the registry using Regedit. look for HKEY_CURRENT_USERSoftwareBullfrog Productions LtdDungeon Keeper IIConfigurationVideo or and set Engine ID to 4. While your'e there ensure ypour 3D hardware setting is at 0. Game now works fine and lives up to my rose-tinted memories of it. Hope this helps