Microsoft Student with Encarta for Free

Get Microsoft Student with Encarta Premium 2009 at no additional cost when you license the 2007 Microsoft Office suite, or any component thereof, before June 30, 2009*!

Microsoft Student with Encarta Premium 2009 is the ultimate homework assistant for students. It includes Microsoft Encarta Premium 2009 multimedia encyclopedia, Microsoft Math, Microsoft Learning Essentials, and foreign language tools—all to help students succeed in a variety of subjects.

For a limited time, Microsoft Academic customers who license the Microsoft Office 2007 suite, or any component thereof (for example, Office Word 2007 or PowerPoint 2007) are eligible to receive a copy of Microsoft Student with Encarta Premium 2009 at no additional cost for each copy of Office licensed.

Instructions to receive your licenses of Microsoft Student with Encarta Premium 2009

If you obtain a new copy of the 2007 Microsoft Office suite, or any component thereof, via Student Select, Student Select Plus for Academic, Campus Agreement, or School Agreement—on or after March 1, 2009, and on or before June 30, 2009—send your proof of purchase (the dated receipt or purchase order [P.O.] from your reseller) in an e-mail message to edumktgp@microsoft.com (use the subject line: "StudentPromo"). We will send you a letter that will need to be signed by your institutions ethics officer or equivalent to ensure this promotional software does not violate any ethics rules at your institution. The signed letter sent back to us via e-mail serves as your proof of license.

Source- MSDN Blog