[hdawg]

You don't need to use your Vista desktop at all and you don't need your PIN number to get started on BES.

Read through these:

How to install the BlackBerry Enterprise Server on a Microsoft Small Business Server

Recommendations for installing BlackBerry Enterprise Server Express or BlackBerry Enterprise Server Small Business Edition

BlackBerry® Enterprise Server Version 4.1.4 for Microsoft® Exchange

... and ask any specific questions you might have.