I got the Digial Leisure Dragon's Lair CD, it looks serviceable at 800x600 maximized, but no doubt the dvd-rom version would look more like the original laserdisc.
One caveat is that I couldn't configure the "Sword" button to be the left-control button, which is how my cabinet's 1st fire button is. So I have it set to the space bar, and I just have to remember to use the 3rd button on Dragon's Lair. It doesn't start up maximized, I use one of player 2's buttons on the control panel to toggle full screen.
That's fine for as much as I play it, I stink. The attract mode sure brings back memories though!
Jason