dual boot

I currently run XP Pro on my primary drive. I want to put in a second drive and use it to install Vista. I need to know if I will be doing this right. My system bios contains a boot option that allows drive selection.

I plan on disconnecting drive 1, installing drive 2, load Vista on drive 2 and get it completely up and running. After shutting down the system, I will reconnect drive 1, start the computer in bios mode, and select which OS I want to boot from and hope that everything will work.

Am I doing this correctly?
Thanks for your help