After figuring out the Remote Disk issue, I was able to mount the 10.6 disk from my 10.7 MP onto my 10.5 MBA. Then I started the installer on the MBA. It quickly told me it had to restart, and did. It then started directly back into my existing OS, and nothing installer-ish ran at any time. I then tried using Option during reboot, and selecting my network. This had no effect, I still saw only the single boot drive. Then I found something about "Remote Install Mac OS X". The document on Apple says I should find it in /Applications/Utilities/. It is not on my MP, and I cannot find a download for it (removed on 10.7?) Any advice?