I have many iBook G4's to wipe. How can I put Disk Utility on a cd to wipe many at a time? Is there a way to do this?

I have 350 iBook G4's that i need to zero out the data. What is the best way to accomplish this? Right now i have leopard on 2 externals and using firewire cables i can only do 2 at a time. Is there a way i can put the Disk utility program on a Cd and boot it somehow just to erase the hard drives?