I have them. Under a pile of dust.
If you don't have an NVIDIA card (e.g ATI) you cannot use the glasses under Windows 2000 or XP. They use third party drivers for non-nvidia cards, which isn't being developed anymore.
Frame rates? Well expect your avarage game to run at half speed! The effect is dissapointing and I do not understand the positive reviews. I tweaked and I tweaked, but it still is a very dissapointing result. My monitor can run at 120hz at lower resolutions, but I see image ghosting effects everywhere (headache guaranteed).