I don't have my dreamcast anymore, but I had done it a couple years ago. There is a boot disk for dreamcast called Utopia I think, you have to download that and boot up your dreamcast, then you have to download an emulator made for the dreamcast, just do a google search, and burn that on a disk with all the roms you want to play. Its pretty easy to do, you just need to find the right programs. I figured it out using google and was able to find everything i needed.
