Register a proxy/stub in HKEY_CURRENT_USER

Question

The MIDL compiler generates code for a proxy/stub with registration routines that write to HKEY_LOCAL_MACHINE. Is there any way (preferably without hacking the MIDL-generated code and without bypassing all that generated code in favor of custom code) to register a MIDL-generated p/s in HKEY_CURRENT_USER?

Also: Will this work if both the p/s and the COM server are registered per-user like this? I just found (after a very frustrating 48 hours) that a p/s registered machine-wide will not work correctly if the COM server is registered per-user. Specifically, the asynchronous call logic (ICallFactory::CreateCall) of the p/s will fail under these circumstances.