Thanks guys
I'm really enjoying it so far, currently playing old PC space sims like Tie Fighter and Wing commander 2 with that awesome midi soundtrack, also getting into some awesome Genesis shooters (never had a Genesis back in the day but very impressed with it).
Genesis games run at 640*480 at 60 Hz on this setup and look so damn good.
I'll post up some more pics of my Checkmate build soon, just got to finish the last few tweaks