installing vista on an old hard drive and a couple of questions

Greetings,

First I want to thank everyone for their time and effort in helping those
of us new to this.

I got into the Beta 2 of Vista and want to try it out. I downloaded the
x86 version and did the MD5 check to make sure it was correct. I then burned
the ISO to a dvd using nero. I have burned ISOs in the past so there is
nothing new here.

I wish to use vista on an old PC incase I screw something up I am still able
to work.

my old PC has 2 seperate hard drives. C: is a 20 gig with win2000 pro and
D: is 80 gig for storage.

My plan is to remove my C: drive from the PC to preserve my 2000 and replace
the C: drive with another old hard drive. This new hard drive is a 60 gig
with xp home on it I think.

I do not plan to partition the new C: drive but just let vista have the
whole thing. I will boot from the dvd to install the os.

Will Vista format the new C: drive for me during install? and if so, what
format should I use? ntfs or a fat32? the reason I ask is that my storage
drive (D is in fat32.

Once I have Vista installed and all drivers working on my new C: drive, will
I be able to just switch between my vista C: drive and my old xp C: drive
just by swapping the ide and power cables? The system bios should remain
unchanged if I am correct.

Thanks in advance