I have the x2vga adaptor which is a true vga adaptor and it is totally awesome on my 19 inch monitor.
It is made in taiwan where you order direct and I found them to be really good company to deal with.
www.x2vga.com
It does all progressive modes upto 1080i
only few games support higher than 480p though.... True Crime and Soul Calibur II and TonyHawk underground are @ 720p and look so cool.... superb gfx.
cheers