Brilliant thread.
I've installed Vista Home Basic today and it seems to be working fine with my low end machine. I'm no gamer so don't have much need for high end GFX, and the machine I have doesn't even have an AGP slot..
Intersting point and handy for the thread I hope:
I discovered Intel haven't and probably won't release Vista drivers for my Intel 82845G onboard graphics chipset so I was stuck with 800x600 at 16 bit which was most disappointing. I tried installing the XP drivers and it took them, but threw up an error in Device Manager and reverted to standard VGA drivers. I had a mooch about in the driver folder in XP and copied the .sys file over to Vista and rebooted.
Happily, all was perfect from there on. the max 1024x768 at 32 bit is now available as is the full range of refresh rates for my ageing but rather nice AOC LCD monitor.
I had installed Nero v7.5.9.0A on the beta and found it to work well. I've yet to try on this. I'll report back when I do.