title: launching correct installer for 32 and 64-bit apps
body: <p>We have an application which, for various reasons, needs to be compiled as both a 32-bit and 64-bit app.  The thing is, we want to distribute both setup files (msi) on a single CD.  Is there a launch condition or autorun.inf entry that we can use to know which setup.exe to launch?  Or do we need to write a separate little exe that gets called by autorun, and which determines the OS, and calls the appropriate setup.exe?</p>