upgrading to Windows 7, messy

I have xp,vista and ubuntu 8.04 on my pc. the boot order is like :

ubuntu boot loader gives the option to switch to ubuntu or windows

choosing windows, vista comes up with its boot loader to switch to xp or vista.

what i want to do is to use windows 7 on my pc without disturbing the boot order & I want to wipe out vista.


what to do ?

 

boot with windows 7 dvd and install it in the vista partition, so that u can replace vista and the order will be unchanged

 

Thanx for the solution, I am waiting for Windows 7 final release.

 

u will regret that very soon. TRUST ME!

 

What if , it is to be installed separately without removing any other OS ?