@SR.:

Thanks fjavi!
Look, according to what my motherboard says, it's compatible with 3Dvision, but I couldn't find it in the list of compatible NVIDIA 3DTv Play. And now that I got it, when I try to install it, it says it can't find a compatible graphics card... ¬¬
Maybe I'll have to buy a new one. I hope I don't spend more money and that it still doesn't work.
Thanks again.
If anyone knows a way to fix the 3Dtv to work with my motherboard, I'll be enormously grateful!

This post could be interesting for what you want to know, it's quite complete.

Special Nvidia 3D Vision - TodoHTPC

regards