I have resumed using a PC running Ubuntu 6.10. I can no longer use Synaptic because the repositories cannot be found (error message 404 Not Found). I suspect I was supposed to upgrade before now. There are a few questions:

1. Are the 6.10 repositories gone or are they relocated?
2. To upgrade to a LTS version, do I need to go 6.10 to 7.04 to 7.10 to 8.04?
3. If the answer to 2. is 'Yes', is there some way to get the intermediate CDs? I have dial up internet access, so any significant size download is a problem.