Microsoft released Windows 7 Beta for download worldwide around December last year. I was one of the early beta user who got the chance to download the Windows 7 Beta ISO file.
Now, I got a good lobang for you.
If you’re interested in taking Microsoft beta exam 71-680: TS: Windows 7, Configuring at zero cost, act fast to register at Prometric.
Just use this promotional code WIN7J when registering for the 71-680 exam. You pay nothing to take this exam. Save S$225.
If you pass the beta exam, the exam credit will be added to your Microsoft transcript and you will not need to take the exam when it official release.
Beta exam registration begins: 27 April 2009 and
exam period runs from 5 May to 18 May 2009
Read more about it here