Best Media Center Graphics Card?

I am looking for a Graphics card and Info on how to be able to see my desktop on my 1080i Samsung DLP tv. Right now I am running some old n-vidia graphics card with an S-video connection to my Tv from my home made media center running XP Media Center OS. When the media center program itself runs, I can see the letters on the folders fine I.E.(Videos, Music, Photos etc. ), and the divx movies and tv shows I watch are fine and clear with whatever resolution I set the video card to (currently my resolution is set at (1024x768 - small letters but fuzzy on desktop). Now what I want is to be able to see the desktop and other non media center programs clearer, like media monkey or even internet browsing. Do you know what I mean by the difference between the desktop browsing picture and media center browsing picture? I have tried to set the character size larger in my options and it worked a little... changing the resolution just makes me lose desktop space. I know a lot of things play into this... Type of connection, resolution, character or font settings in windows? So, is what I need a new graphics card with hdmi or dvi output? What is the best card or things I may want when looking for a card, and what other settings might I not be thinking about. I have read a lot of forums on what videos cards to use, but I haven't found a question like mine.So, if any help or direction can be given I would greatly appreciate it. I hope I've made it clear, if not hit me up and thank you! I just don't want to go pay for a moderately expensive video card if its not going to solve the desktop focus problem. My TV has all inputs except for the straight VGA Monitor input.