Thanks a lot for your comments guys.
As far as I'm concerned, this is one of two Windows computers I own, it has XP, it has 4GB of RAM, it is the computer I mainly use for important things.

I want the new SATA disk drive to be a seperate drive to C:
C: is partitioned into C and D drives, E is the CD ROM Drive
F is the USB stick I sometimes use to add stuff from "outside", it also shows up as G drive, after I have plugged it into my laptop, so that letter is not available.

I don't want striping or anything like that, because if one drive fails, it will take the whole array out, they must be independent of one another.