Sigh :( Sega's last hurrah in the home console business. Just like the Saturn, the Dreamcast was damaged more by bad marketing than anything else. SO MANY good games came out for this system, I just don't understand what happened.
Recently, a fully working emulator came out, called Chankast. (And, no, I don't know what sandals have to do with video games). If you expect to run this emulator, however, you better plan on upgrading your system. You need AT LEAST a 2GHz system to run most games full speed. Plus, you need a way to rip your games to a CD, as the original GD-ROM discs cannot be read on any computer optical drive. That's all the info you're getting out of me on this one.
Personally, you're better off getting the real deal. They can be found cheap at used game stores or eBay.