computer monitor question

Jono

Hail Satan!
I got ahold of a 33in monitor at the enron auction and its got s-video, RCA, and RGB input. I'm trying to figure out how to get the best quality resolution from my xbox. i know there's a new vga adapter to get hd-tv resolution from you xbox on a vga monitor. Does anyone know how much the quality would dgrade if i used the xbox vga converter with an rgb adapter?
ok thanks guys!
-Jono-