They might sneak upstairs and **** your sister in the middle of the night too... //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif
I am no video guru and don't claim to be. But, if I am correct your TV converts the input signal to it's native resolution anyway, SO if you have a TV thats native resolution is higher than the signal you are feeding it then it upconverts the signal anyway.
So, pretty much what you have discovered, as many people with decent sets have, is that your TV is a better upconverter than the DVD player. My Pioneer Elite is better at upconverting my Pioneer Elite DV-59avi's 480p than the Oppo HD-981 is feeding out 720p/1080i/1080p.