That is fairly easy to do all you need to do is use a single common directory for the install files and then configure as many wpi setups as you want and place them on the disk as WPI1, WPI2, WPI3 and so on and then you just call each WPI with whatever method you want. To save space you can delete all of the unnecessary files WPI doesn't need after setup and config (like the manual folder, ussf and pied, the theme you wont be using) ad with cdimage several WPI's will only take up like 2-3 megs at the most.