Booting XP from a secondary drive... yes... but?

I've been doing some research since my last post and discovered that it is indeed possible to have Vista and XP installed on 2 different physical hard drives and boot from either one.

So this brings me to the next dilemma...

1. If I install XP on my F: drive (which is my secondary hard drive), will all the references be to F:/ or will they default to C:/ ? (I cannot use D: as it is used by Vista "Recovery" but it really shouldn't matter what the letter drive is called, should it?)

2. What about when I install applications to the F: drive where XP resides? Won't the application try to install all the system files to the C: drive where Vista will be?

Can I still install XP on my F: drive while it is connected to my old computer and then later physically move that HD over to the new computer? Assuming I install all the drivers for the new computer's hardware on there as well... (The 2nd hard drive will still be called F: on the new computer)

If so, how will Vista know/recognize there is another OS on another HD if I connected a new hard drive with XP already on it?

When I boot from the F: drive (XP), will it show up as C: or F: ??

Also, I still need to know where EasyBCD comes in, in the installation/setup process.

Thanks again!!

LB