Ok,I have a question for you dear fellow geeks

It well may sound totally stupid,but I think it will help others too browsing this forums that its not 100% clear for them..
Im planing tu upgrade my LCD,mostly because there is a big grey mark on it (the producer said that its apparently due to pressure damage) and also I've got a nice new MSI GTX 480 and want to see it doing wonder on higher resolutions

My question is that DO YOU NEED TO HOOK UP A FULL HD MONITOR WITH THE VGA CARD VIA A HDMI CABLE TO HAVE A FULL BENEFIT FROM THE FULL HD MONITOR?(speciffically I mean a full bebefit of picture clarity)
Now you may say that was really stupid question,but then why you see so many LCDs for instance a 22" LCD with full HD resolution of 1920x1080,but when you check the tech spec. it doesnt have a HDMI conector..??
Thanks in advance