Is the telly anywhere near your PC?
What TV do you have? You could get a really long VGA/DVI-HDMI/S-Video cable to join the two, whichever your telly accepts. You'll also need an audio cable.
There are indeed DVD players with a USB slot and they're fairly cheap these days.
If you've got an Xbox, that'll do it too, either from USB or by linking to your PC with an ethernet cable.