how to fine with sql server setup file if the binary given is 32 bit or 64 bit setup file

My vendor has given an setup file of SQLserver2005 (tools and server folder) taken from disk, however he has renamed the main folder as general SQLserver2005setupfile.

Is there an way to find what is the bit version of the setup file provided to us, understand splash file gives the ENT or STD edition alone and not bit version.

Regards

Eben