Is Doom 3 compatible with Vista?

I know Vista does not offer 8 or 16-bit program support but Doom 3 is 32-bit. Older dooms will most likely not run but Doom 3 should be ok. I do not know if you have ever heard of it, but I use STEAM for most all of my computer games. You buy them on-line and download them to your hard drive instead of using a CD. To see if Doom 3 works with your system you can go to www.steampowered.com and download STEAM for free and then download the Doom 3 Demo and try it out, at no cost to you. STEAM carries a ton of games and adds mor all the time.