I just bought HD ADvance. It works great but I have a few questions. When do I use the DVD disc instead of the regular disc. AND do I have to use it every time I want to boot a certain game. Just wondering about the difference in the two discs. Thanks, any comments will be appreciated I have HD ADVANCE and 120 gig from Maxtor, bought new adapter from Wal-Mart. EVerything works great so far no problems, I have downloaded 8 games. But I have not used the DVD disc at this time and need to know If I ever will have to use the disc.