A great way to get valuable information about Windows Licensing, and to receive a free USB drive from Microsoft is to go to
http://www.microsoft.com//windowsxp/mysterysolved/corp/default.mspx
sign in with your Passport, complete a small form and answer 4 simple questions (which you can find the answer of on the homepage).
Thank you for requesting the Mystery Solved USB drive loaded […]

I was looking for a place to buy Microsoft apparel, like the Google store where you can buy things with the Google logo on them.

They have numerous products, from caps ($13.99) to mint ($2.50)