you can read it and judge by yourself

MICROSOFT CORPORATION NON-DISCLOSURE AGREEMENT

http://www.wellsregister.com/ciosummit/CIO2004NDA.pdf

and also the
Microsoft Vendor Program Agreement

http://download.microsoft.com/download/e/9/2/e92ad3da-3433-4bc3-a7a0-7a492c62243c/Agreement.pdf