I hate to keep sounding like a broken record about how amazing Windows 7 is ... but check this out:
I just downloaded the new NVidia Graphics Drivers for my 512mb Video Card ... and didn't have to restart to apply the current (and proper) Windows 7 Driver so I can have my 1680 x 1050 native resolution on my 22" widescreen LCD.
Can anyone out there remember EVER changing a video driver in Windows and NOT having to reboot? Hell, you used to have to reboot when changing screen resolutions.
Yeah. Windows 7. It rocks.