I have xp 32 bit, I installed Vista Ultimate 64 bit as a dual operating systemon two different drives (50gb).
1) I want to install Windows 7 64 bit on other 50gb drive now. just woindering on which OS ( XP/Vista) do i have to install Win7.
2) If i want to uninstall any of these suppose Vista is it possible / do i have to format the drive
