Vista - Uninstall procedure

Greetings! I installed the 32 bit version of Windows Vista Public Preview
Beta as part of a dual boot with Windows XP. Windows XP Pro SP2 is on the
boot drive, and the 32 bit version of Vista is on a second HDD.

After installing Vista, the computer boots using the "Windows Boot Manager"
interface installed be Vista, this interface offers me the choice of
"Microsoft Windows" (this is Vista), or "Previous Version of Windows (XP Pro
SP2).

I would now like to uninstall Vista and get rid of the "Windows Boot
Manger". I would prefer to do this without having to reinstall Windows XP.
I would simply like to remove Vista, and have windows boot "normally" as it
did prior to the installation of Vista.

It this possible, and if so, how do I proceed to uninstall Vista?

Bobby