I don't think so, the PE headers are different. If you really wanted to, you could hack your own "fat binary" format by packing the 64-bit EXE as a resource wi

I don't think so, the PE headers are different. If you really wanted to, you could hack your own "fat binary" format by packing the 64-bit EXE as a resource within an x86 binary that detects the current architecture, but that's not very exciting.