vpr matrix 220a5, 2nd hard dsik

[Kayaker]

vpr matrix 220a5 dual hard disks - 2nd hd for linux

here is what i want to do:
1. keep the original hd which is preloaded with xp home
2. get a new hd for the notebook to install linux (slackware)
3. i will swap hds to use xp and linux
4. i don't want to dp "double boot" if all possible

why
1.0 widnows xp is already paid for in the purchase price
1.1 widdows xp has its place - although i would rather use linux but:
(a) not all the widnwos software are available in linux
(b) not all the xp "compliant" hardware can be used in linux
most importantly,
(c) i have to do app demos in m$ xp for some clients - it is the fact of life, u do what u get paid for. isn't it?

2. linux is really better - just in case you have any doubts
(a) it is STABLE
(b) you can do virtually anything you like with it - building a new kernel to streamline the os, to customize a business app environment - for intance, getting rid of all the "junks" and load only the os and your app - few things to go wrong <-- to debug and troubel shoot
(c). it is OPEN and FREE - you can give away anything linux without BREAKING THE LAW. how many times u have to tell your friends and clients that u CAN NOT give them the cool windows software you just dazzled them with.

Now, tell me

WHERE can i get the 2nd hard disk to work with 220a5?
and
WHAT do i have have to do to get the 2nd hard disk to inside the vpr matrix 220a5 box?
and
is there a BETTER WAY of swapping OS with 220a5?

is 220a5 capable of booting from external usb harddisk?

THANK YOU.

kayaker