Well, I'm not sure why you'd waste the nice video card on it, but it is a nice thing to have. I'm running mine off an old ATI 8MB PCI Rage Pro card.
While using it, I've had Roger Wilco, WinAMP, ping software, and more recently, I set the background of the monitors to use a strategic map of the current terrain. One that has the factories, cities & HQ laid out on it.
Just remember, it's only really good for static stuff. While stuff running on that monitor will update (like the RW list), you won't be able to access it unless you ALT TAB. That's only in AH, of course. While using it with Windows, you'll soon wonder how in the hell you've ever lived without it!
SOB