Nope the cab file doesn't contain any registry.
There's a Setup.dll that came with the cab, I think it is responsible for setting up all the registry entries and such, but the problem is that if you have setup.dll from other apps then CreateOS.exe will ignore and only get one of them. Also, I don't know how to invoke that DLL so that it can do its job as of now. So manually creating the registry seems to work. You can attach it in the .rgu file if you like. Right now I'm getting some errors with CreateOS.exe with the reg dump I got. CreateOS.exe is saying Can't create DEFAULT Hives or some'n.
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