How do you install Vista with no bootable DVD drive?

> Here's my problem.
>
> I have a computer with dual drives. One drive is a CD drive, and the other
> is a DVD-RW drive. I have no floppy drives. The DVD-RW drive will not
> boot,
> but the CD drive will.
>
> How can I install Vista from a DVD? I can only boot from the CD drive. Is
> there a disk I can use in the CD drive that will redirect the boot to the
> DVD
> drive and install Vista?
>
> Also, I'm trying to dual boot it with XP. I've heard elsewhere that it's
> possible to install Vista from within XP by mounting the ISO image as a
> virtual drive... could somebody clarify?
>
>