Is there a Sales Specialist certification for Microsoft products?

Prosoft awards a CIW Sales Specialist certification to you after successful completion of an open-book exam. Is there such a certification awarded for Microsoft products?
Although Microsoft does offer sales training in the form of CBTs and online courses, I am not aware that it offers any certifications for sales professionals. Please contact your local Microsoft sales office to find out more.

Also, I see no evidence on either the www.cicertified or the www.prosofttraining.com Web sites that Prosoft offers Sales Specialist certification. And unfortunately (or frustratingly), neither site offers access to a search engine to look for such a credential, either. Nor do I come up with anything by searching public search engines.