Thanks for the responses.
My main issue is that I just upgraded to dual 625s (two months ago, getting rid of my old owned 301 and 508) so I doubt I qualify for an upgrade and will be taken to the bank by Dish (Anyone know how much if I went with one 722k? Would it just be the $95 install fee or would there be other fees?)
Also, I guess why I am confused is that all the SD channels I watch are cropped so I was wondering if I had the proper screen ratio if I'd be able to see what was on the left and right (but I guess SD is just chopped to begin with right from the source.)
Edit: And yes, I know I am almost the last person in America to invest in HD sets, but I wanted the technology to mature!