Help burning a multiple AHT CD!!!

Hi!

I have a powerbook G4, an iMac G5, and I recently bought an macbook pro 13". The installation CDs of my powerbook and imac are lost and I bought the installation dvd from the apple store. the issue is that I want the Apple Hardware Test applications of those systems on the same CD but I don't know how to do it, I downloaded the dmgs from the apple support and used a burn folder but when I tried to boot the CD to run AHT only the macbook pro loads the AHT, the powerbook and imac don´t boot from the CD. Am I missing something??

Thanks in advance

 

Thaks I tried that but nothing happens, I also tried to install the dmgs in avUSB drive, but I can't copy the images unless I create different partitions for each dmg, since the dmgs are not larger than 4 mb, I don't want to create 1GB partition for every image, is there any othertrick to install multiples dmgs into 1 single partition and make them bootable.