Vista - Need to read 64-bit registry from 32-bit RegRead

Hey,

For the life of me, I cannot figure out how to make the VBScript function
RegRead read a 64-bit registry entry if the 32-bit wscript.exe is running. I
need this because I have a post-build event in a Visual Studio project that
runs a .vbs file, and if the machine architecture is x64 and the project
configuration is x64, I need to look up something in the 64-bit registry.
However, presumably because the compiler is a 32-bit process even in 64-bit
Visual Studio, the 32-bit wscript.exe is getting invoked, so
HKEY_LOCAL_MACHINE is redirected to Wow6432Node.

Maybe this is really a Visual Studio question, and I need to figure out how
to make Visual Studio invoke 64-bit wscript.exe.

Thanks.