Microsoft is offering a free 90 day trial of Windows 7 to people with Technet subscriptions. Many professionals are signed up for this service, and the free trial is meant to give them an extended look at the operating system. Microsoft is hoping that some of these free trials will lead to sales, as people continue to evaluate if the upgrade is worth it. The number of trials is limited, so be sure to get yours now if you want to get in on the trial. After the trial expires, users will need to purchase a full license to continue using the OS.