Hog3 PC installation error - Vista 64 bit

I'm trying to install Hog3PC-Win32-golden_3-0-5-2482.msi on Vista Home Premium 64 bit OS, and receiving a "This application is designed to operate on 32-bit operating systems only."

I've used the compatibility wizard to try to run as a XP SP2 program, but still the same error message.

Help?
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