If that message came up on my computer, it would mean that I haven't turned Video hardware acceleration on, but i guess that isn't applicable to every computer .
You need to go to the system section of control panel to change that in some windows versions, or in xp i know you have to go to the advanced section of your display settings. Sorry I can't help anymore, I'm sure someone has a better explanation. I guess it could also mean you don't have the compatible driver for directdraw, but now i'm just rambling
I've noticed the HTTP://WWW.TBYTE.COM website is alive again now, saying that they are moving, "please stay tuned" !!