Microsoft posts the instruction on the Web site
you went to to sign up for the download:\
http://www.microsoft.com/windowsvista/getready/preview.mspx
You should have taken time to read the information.
Here’s a summary of how to download, burn,
and install Windows Vista Beta 2:
1. Download the ISO image file from the location
indicated in the e-mail message you receive
after registering, and save the file to your
hard disk. (If the download prematurely
terminates you can resume the download process
from where you left off using the download manager.)
2. Using a DVD burner and software, burn the ISO
image of Windows Vista Beta 2 to a new blank
DVD. We recommend burning at the lowest speed
supported by your DVD burner (1X or 2X) to
ensure the highest quality. Most DVD burning
software will recognize an ISO file. If your
software does not automatically recognize this
format, refer to the software’s “Help†section
for instructions.
3. Insert the DVD on which you burned the
software into the DVD drive of the computer on
which you want to install Windows Vista Beta 2.
4. The installation process should start
automatically. If it does not, run Setup from
the DVD to begin installation and follow the
step-by-step instructions that appear on the screen.