A while back, there was a close up picture of the back of the tv posted on here. I can't seem to find it now, but I remember seeing what I thought would be an hdmi port. It was not the best quality, but you could make out some connections.
I'll keep looking for it.
*Edit*
I found that post. Here is the link they provided to some photos of the back of the TV. The photo itself says it was uploaded in 2009, so I'm thinking it may be from the Wonder/Magic, but it might help you out. On the closeup of the back, in the top left of the picture is what looks to me like it might be an HDMI, but it could be usb too. Also, if you look just above the screw next to that port, I think I can make out the letters HD with more after it.