dual boot?

How do you dual boot? I want to dual boot Windows XP Pro and Windows Vista RC1. I have two HD's in my rig rite now. A 120GB one and a 160GB one. Windows XP Pro is installed on the 160GB HD. The 120GB one has nothing on it because I just installed it. I want to install Windows Vista RC1 on to the 120GB. How do I do this? Is it the same process as installing on a single HD?

Thanks!

Yes. just install on the 2nd HDD when prompted. WIndows will add the 2nd OS automatically to a boot menu.

Alright thanks! Now have to wait 10 hrs for windows to download