Medicare Competitive Bidding for mail order diabetes suppliers

The Medicare Competitive Bidding program seems to be rolling forward but it has me throughly confused. My questions resolve around what it means for mail order companies such as ourselves. According to the latest news from Medicare, it will accept bids for the top 10 MSA except for LA, NYC in the Fall of 2006 for a yet to be determined list of HCPCS codes. So to participate in these markets a company will have to be successful during the bidding process. But the latest doc also discusses creating both regional and national mail order territories sometime in 2008-2009. Is the MSA bidding only for local retailers. Can mail order companies still accept new customers in these MSA's. Or must mail order companies compete in every MSA's bidding?