which hdtv to choose...

okay, i want a lcd hdtv for watching tv, playing my xbox 360, and also for using as a computer screen (what kinda input is required for this...i have a dell dimension 9100 pc...is it just a s-video input or do i need dvi?)...my budget is around $2000, i want a 37"-42" screen, needs to be widescreen & black if possible, and i defintely want it to support 720p and 1080i so my xbox 360 will look good on it...please help me find what im looking for because im going to purchase this in the near future...thx

peace