Hello potential students,
There have been at least 4 people interested in doing the reg.exe project for summer of code, but unfortunately this is not really a good project idea, becuse you can pretty much implement it all in a single day by just calling the right advapi calls. Making winecfg work from the command line is also not hard and you can't fill up 2 or 3 months with this.
I'm sorry for not investigating reg.exe further. This should never have been on the ideas list to begin with, and I should be the one to be blamed for not spotting it earlier.
I would strongly recommend adding a proposal for another project. It doesn't have to be one from the ideas list, on the contrary: The most succesful applications have been initiatives from people themselves. As long as you work, interact with the community and communicate with your mentor and share your code and ideas you will get paid.
I hope that you will have luck in finding other proposals, and that you will be able to participate and complete gsoc succesfully.
Regards, Maarten.