I don't have this anymore other wise I would send it to you but if you can find a copy
of FWB Hard Disk Tool Kit.. It will help you mount pretty much anything. It will handle
the CD-ROM problem.. FWB is no longer is business but the software is the best.
You wont be able to mount DVDs on 7.6..
I think I was up to 9.2 before I got a DVD drive..
I do recommend getting an Apple CD ROM because if you want to upgrade the OS from a CD you
will need a bootable CD ROM drive and those are the best.