#################################################################################################### ########
I tried the Lenny version of initrd.gz and vmlinuz and the hard drive mounted with no problems. The problem with the Lenny version was I was not able to find the Lenny equivalent of debian-6.0.4-i386-netinst.iso. Not having the PCMCIA and Ethernet drivers I was not able to connect to the internet.
#################################################################################################### ########
I think I would take the drive out & connect it to another machine to install Lenny to it.