this is likely a botched install or patch. The problem in Vista is that in some versions you need to install everything with admin rights. Just using an admin account does not cut it - you have to rightclick on all installers (both for the games and for the patches) and choose run as administrator. Do the below, if you do not have warlords ignore those parts, and make sure to run all installers with admin rights (i.e. do not just put the disc in and choose install - go into the windows explorer to manually click on the setup.exe on those discs).
install the most recent version of DirectX 9c from
Microsoft
then do the following for a clean reinstall:
Uninstall and Reinstall Civ4 Warlords BtS :
Try to follow this order when doing stuff:
Use Control panel to uninstall Beyond the Sword, then Warlords, then Civ4
Delete "...\documents and settings\<username>\my documents\my games\sid meier's civilization 4" manually
Delete "...\documents and settings\<username>\my documents\my games\warlords" manually
Delete "...\documents and settings\<username>\my documents\my games\beyond the sword" manually
Delete "...\documents and settings\<username>\application data\my games\sid meier's civilization 4" manually
Delete "...\documents and settings\<username>\application data\my games\warlords" manually
Delete "...\documents and settings\<username>\application data\my games\beyond the sword" manually
Delete "...\documents and settings\<username>\local settings\application data\my games\sid meier's civilization 4" manually
Delete "...\documents and settings\<username>\local settings\application data\my games\warlords" manually
Delete "...\documents and settings\<username>\local settings\application data\my games\beyond the sword" manually
(note: application data is a hidden directory so you need to configure windows explorer to show hidden files, also these directories in application data are sometimes removed by the uninstall routine)
Delete "...\Program Files\InstallShield Installation Information\{CFBCE791-2D53-4FCE-B3FB-D6E01F4112E8}" (Civ4)
Delete "...\Program Files\InstallShield Installation Information\{3E4B349F-10B5-4586-9D99-489A90A8B228}" (Warlords)
Delete "...\Program Files\InstallShield Installation Information\{32E4F0D2-C135-475E-A841-1D59A0D22989}" (BtS)
(note: InstallShield Installation Information is a hidden directory so you need to configure windows explorer to show hidden files).
Install Civ4, immediately patch it to 1.61 (download it fresh from
here)
Install Warlords, immediately patch it to 2.08 (download it fresh from
here)
Install Beyond the Sword, immediately patch to 3.17 (download it fresh from
here).