hmm, not sure what reg keys would be of use at the moment.
I generally dont "add" any, i delete ones from virus/malware.
I use "dial a fix" alot for XP, but they never made one for Vista/7 systems.
It usually cures all my networking and update issues, but what ever affected these two systems
no matter what i did could get any network to log on.
If i come up with something to add i will let ya know.
I've used the "unhide" non system files a few times that you have and it works great.
Thanks for all the hard work.