I installed the beta version of vista available before sometime on MSDN, and made my computer dual boot (Windows XP was already there on c:\; vista was intalled on G:\)

Now, I want to remove the beta version of vista from the harddisk and freeup that space. My boot up menu shows me Vista and Earlier OS (which might live somewhere on C:\boot.ini - as per the legacy tradition.. but if I see the boot.ini, it says,
;Warning: Boot.ini is used on Windows XP and earlier operating systems.
;Warning: Use BCDEDIT.exe to modify Windows Vista boot options.

I tried looking at BCDEDIT.exe but could not find anything by which I can remove the Vista Entry safely  (and after that, i will format the g:\ where i installed the vista, i think that will clean it and thats what i want.. i can not take risk of putting my XP system at risk !!)

Any help appreciated !!