Just look at the price of each os. XP STILL cost more than Vista. What's that tell ya?
Anyway, Mr. Sauce, are you operating with "administrative rights" when you're trying to alter said file?
Yes. I gave it a whirl last night, but I did it wrong. I'm going to undo it in a little bit. I was testing on the Baron and I made it go away. I copied to desktop, edited, and backed up the original .cfg as .bak the pasted the edited version into the airplane. No more .bak in Vista? I dunno. Another oddity is that notepad displayed lots of weird junk, while wordpad worked okay. I thought they were all done in notepad.
As to the quality of Vista, I've found it to be very reliable, boots quickly, and the "overboard security" doesn't seem to be more than one extra click, like a second chance before doing something. Not a headache at all, as portrayed by all the Mac VS PC ads. All the horror stories I read and was expecting are nonexistant.
Oh, and get this. I've installed NO anti-virus, no anti-spyware, no anti-trojan, keylogger, or even a third-party software firewall. Only the onboard firewall and my router. Two weeks plus and nothing. I'm still waiting on the mythical "10-seconds-to-infection" thing. Interesting experiment.