Have you pressed F8 on start up. This should give you the boot option.
--
John the West Ham fan
<><
"TomC" <> wrote in message
news:BC880151-D929-4CA8-9E1A-...
> I have a new Presario 5210NX with Vista installed and no installation
> disks
> provided (I have made system restore disks). I have another disk from my
> failed computer with XP on it, and XP restore disks that came with it
> (eMachine labelled disks). I have installed the old disk and the system
> recognizes it, some of the programs on it will even open, but I would like
> to
> be able to dual boot the two operating systems. I have tried changing the
> disk selection in boot, but it changes back to the Vista drive. Any
> suggestions?
> --
> TomC