Create 2 partitions win win xp home on them.
You'll need to do some dualboot config shizzle which you can find here....
http://www.be.sys-con.com/read/180914_p.htm
Make each partition atleast 25gb, especially the one you use for designing.
Install xp, update it all then make a ghost using nortons ghost, to copy the partition onto the next partition

make sure you have formated the other drive to store the ghost copy to it. Then use ghost to duplicate the partition image onto partition 2 ( D: )
Do the config in the link and bobs ur unkle.
2 installations of xp which both show as c: when in respective installations.
If thats confusing then sorry, will have to explain later or when this flu has passed as i feel like a zombie.
Read up on dualbooting in that link and you should get what i mean