Your DVD player probably has a better scaler than your TV. The 2910 uses the same Faroudja chip for scaling that the Oppo 971 uses, and the 971 is supposed to do an excellent job of scaling. I haven't heard of a TV that has a built-in scaler of this quality.

And, btw, to have your TV upconvert a signal, all you do is send it a signal that is at below its native resolution. DVDs (NTSC DVDs, anyway) have 480 lines of resolution. If you have an HDTV, it has more than 480 lines of resolution. Any time your TV is displaying anything it is displaying it at its native resolution. If the signal it is sent is not at that resolution, the TV converts it to the appropriate resolution.