Reinstalling operating system and productivity software can be a time consuming task on more than just a couple of computers at once. If you have several systems which are configured identically, I can do a fresh install on one system, then burn the hard drive contents to a bootable CD, enabling a software restoration (see the "Wipe and Reinstall" Service) by simply inserting the CD and rebooting the computer.
Naturally, this will not restore any personal data files. These should be backed up before the system restoration is done.