Upconvert Dvd Player Great Product!!!!!!!!!!!!! Upconvert DVD Player For Vizio 37" LCD HDTV?

Upconvert DVD player for Vizio 37" LCD HDTV? - upconvert dvd player great product!!!!!!!!!!!!!

I have the TV as follows:

http://www.vizio.com/products/detail.asp ...

I wonder if a DVD upscaler to improve the image quality of DVDs, and if so, whether it was necessary to HDMI or component cables to get the best result. Also purchase suggestions would be grateful.