Dear Microsoft Beta Tester,
We are pleased to offer you an early preview of the Microsoft® Windows® Vista™ formerly code-name "Longhorn" and Internet Explorer 7 by extending this invitation to join the Windows Vista beta program. Your participation is completely voluntary. Program participants will preview software for the next generation of Windows as well as Longhorn Server, and Internet Explorer 7 for Windows XP. If you choose to participate you will have the opportunity to provide Microsoft with feedback as we continue work on these exciting new releases.