Installing linux on separate hard drive

[S1 J <mygameid1 sbcglobal net>]

Hi,

I'm planning to install Fedora Core 2 on a separate hard drive(an old 4.1GB drive)
from the one I have windows XP installed(80GB WD drive).
What would be the best way to be able to choose what hard drive I can boot
from? Or would I have to go into BIOS every time I wanted to change the OS I
want?

Thanks