OK so basically I installed Civ IV, then BTS, and then immediately installed the 3.19 patch. There was absolutely nothing on my computer. No shortcuts. No programme. No folder for the games in programme files or anywhere else. No evidence at all that I'd installed the game. I clicked on uninstall a programme and all I could see was the civ iv programme installed, but it didn't have the Civ IV icon; it had the icon programmes have when there's nothing to load them on. Now at this point I fiddled around a lot and everything is pretty confused if I'm honest. I was able to uninstall Civ IV eventually, and then reinstall it, but there was little progress. I tried adding a patch specifically for Civ IV 1.74 I believe. The game does now appear and has a folder in programme files. However when I try to load it it says to turn on administrator privileges or something and then if I run it as administrator the programme just doesn't load up full stop. At this point it seems like I haven't uninstalled BTS and yet there is also no evidence that I've installed it. I may trying plugging in that disk again and report back. Until then could somebody please offer any comments?