Thanks for visiting! TONMO is the world's greatest online cephalopod enthusiast community, with interactive content going back to May of 2000, and a biennial conference. If you'd like to join in on the fun, become a TONMO member -- it's easy and free. Follow us on Facebook and Twitter for more cephy goodness.
My old Nvidea card had a TV-out on it. I thought it would be really cool when I bought it but then the first time I hooked it up I realized how lousy TVs really are (its probably better with the new 1080 TVs). Are you hooking it up with the right cables? Don't forget to let Windows know its outputting to a TV. Go to Settings -> Advanced and change your monitor to TV.
Good luck (both in getting it to work and not having anyone complain about posting it!)