Youd be better off looking at something like http://thinstation.sf.net or http://pxes.sf.net Both will allow you to do what you want and can be installed to the hard drive, or booted remotely, so the computers youre getting wont even need harddrives
Youd be better off looking at something like http://thinstation.sf.net or http://pxes.sf.net Both will allow you to do what you want and can be installed to the hard drive, or booted remotely, so the computers youre getting wont even need harddrives