install windows xp without cd drive?

[hornyhammy]

I have bought a fujitsu b142 lifebook without harddrive.

I have installed a new harddrive and now want to install windows xp.

this machine doesn't have a CD drive
but it does have two USB slots.

If i buy an external USB CD drive will the machine automatically recognise it?
and is it really this easy?

all help is welcomed
thanks in advance.