It can be another ditch to popularize the newly launched Windows Vista operating system. Both Microsoft and T-Mobile have come forward to provide free WiFi services for the customers who use Windows Vista. According to the joint agreement, T-Mobile would offer free WiFi at Starbucks, Borders Books and Kinkos locations around the US for those with Tablets and laptops running with new Windows Vista Operating System. The free service will remain in force from January 26 to April 30. Both T-Mobile and Microsoft are busy in promoting the free offer. For which, they are using sponsored “SkySurpise” site.