My new Civ IV mod needs SDK owrk, so I logicly decided that I must learn SDK. Following the instructions of the Modki, I got as far as "Download and install the Microsoft Platform SDK", which links to this file. When I tried to run the executable, though, my system gave me this error.
Anyone know what happened, or, more importantly, how to fix it?

Error: Setup was started in a non-native or WoW environment.
Please run the setup package that is appropriate for your operating system installation.
Anyone know what happened, or, more importantly, how to fix it?

