I am thinking about taking the dive to the true 3d experience with the 3DVision system but I am hoping to use my existing Samsung 46" "non-3d" 240hz (LN46B750) TV I bought early this year. Has anyone had experience with this type of setup?

I have my computer hooked up via HDMI to this TV (as well as a 60hz LCD monitor) and I've played around with normal games as well as used the Nvidia 3D Discover with some games and it works fairly well on this screen. I just can't see replacing my existing 24" 60hz monitor with a 120hz LCD monitor right now.

Also looking for a good recommendation on a wireless keyboard/mouse setup. I'd be sitting on my bed with the TV directly in front of me; so any recommendations on how best to work that would be appreciated too!

Unfortunately regular HDTVs don't work with 3D glasses. You need to have a specific 3DTV.