I used to have a similar problem with a Dell laptop and any flash drive I tried in it. I never found a fix for it, I just made sure too unplug my flash drives before I restarted.
I dont have any experience with this, but i googled for a couple minutes and heres what i came up with.
http://emulation.victoly.com/windoze/
and...
http://openosx.com/wintel/index.html
Its a DVD right? I have the same DVD. The dvd gives you the option too make a stand alone .iso for each of the operating systems. Try making the .iso and burning it too a cd by itself.
Ive had mine for a few days now. Only problem so far is that I cant load UT2K4. I dont know why, installer just quits. Everything else is cool, im digging dashboard. I havent found a use for spotlight yet.