Can I run three monitors off one video card?

I have an nVidia GTX 470 video card and it has two DVI and one mini-HDMI connector. Does this mean I can hook up three monitors to this thing or does one of the DVIs get disabled when the mini-HDMI is connected?

I’ve never seen any info that says it can or can’t. Even now I can’t find any information on it being able to, but nothing saying that it can’t be done. I’ve always worked off the assumption that one of the DVIs would get shut off. I’m not sure why, probably because I’ve been used to one-card-two-displays for so long.

I ask now because I just information on ATI’s new monster HD6990 and it has one DVI and four mini-HDMI ports and the article says it will run five monitors. But, it also has two GPUs vs my one.

So… anyone know? Anyone have a video card with two DVI and one mini-HDMI and knows it can do all three at once?