I'm a noob at this also but I've been spending the last couple days researching this and I think I can give you an answer; Hopefully.
First of all I'm guessing you have already set up a 3D TV and all that jazz..
As long as you have a Nividia GTX550 or a Radeon 6650 or Intel 2400 or newer you should be fine as far as a GPU goes; it'll support it anyway. The issue now would be how to play said games.
There are different ways to get 3D with Radeon; my recommendation would be TriDef, it's been pretty easy for me to use; but it's 50 bucks so...
For Nividia everyone's been talking about their "Nividia 3D glasses pack" thinggy which really wouldn't help in your case, but i do believe they can use the TriDef as well.
You should be able to use your same 3D glasses as long as it's not Passive 3D (like in movie theaters)
Hope this helps