I did upgrade on a freshly formatted drive so there should have been no problem there, however, I should point out that I tried running two hard drives with two OS's XP and '98 the problem was that with a dual boot system the '98 drive was very slow. I tried to format the drive but the computer would only allow an ntfs format when both systems were on fat32 so what I did was, I deleted everything on the '98 drive and use it to store my game folders and it's on this drive that I tried to install CMBO with the problems listed below. When I double-click on the icon my screen goes black and my computer whistles. I therefore tried to install it straight onto my XP drive with the same results. I tested DirectX as you suggested and everything appears to be fine, any ideas?
Phil