First, I open up Disc 1 of FSX and look under the SDK folder within the disc. At first, I click the one where titled "Microsoft Flight Simulator X SDK". However, a pop up comes up telling me that I have to click the "Setup.exe" icon in order for the installation to work.

So, I did exactly that. I double click on the "Setup.exe" icon and the process runs. However, moments later, another pop up tells me this.

This is where the dead end lies. Any way to fix this error? I have Windows Vista 32bit Home Edition.