How to be a part of microsoft and trial software like windows 7? -

How can i be a member of something microsoft where you trial software for microsoft for them before it comes out ,

u have to be a certified tech or u can take ur chances like everyone else buy using the a beta app ---the thing is do u know what ur doing --how to report a flaw or bug here s a question to test ur self to see if ur ready and no cheating ----- what is longhorn ? if u have to look it up u need not apply no offense implied

dont no but i downloaded 7 and its still buggy but its beta and longhorn is the old name for vista!