Dreamcast ROMs

[The Shadow Dragon]

Is there a simple way to burn and play Dreamcast games on the actual console? I got Sonic Adventure, but it's pretty beat up and I was wondering how easy it is to burn another copy of it and play it on the Dreamcast I picked up yesterday.

EDIT: So i found the bootdisks on here, but I can't get any of them to work, neither with my copied version of Sonic Adventure or with the Namco Museum ROM from here. I'm a bit lost on what to do.