The /etc/apt/sources.list to say sarge vs. stable/woody.

Don't use the term "testing".

apt-get update && apt-get upgrade and see what happens.

If all goes well or there is too much to do, with libc stuff blocking nearly everything then you need to go onto the next step.

apt-get -u dist-upgrade

That should theoretically bring you right up to date.

Since Sarge is "supposed to be" release @ the end of May... (end of June likely or later) this might just be you path of best options.

The one bad thing about Ubuntu is "releases every 6 months" whether or not it needs it. Plus, even though you can do a custom on Ubuntu to get a server, why for would you do that when Ubuntu is based on more Graphical releases.

Thoughts is all.

1. No, it will keep the original. But simply rectify it by installing one. Also, I'd suggest you turn to GRUB as your Bootloader. It just plain is nice to have the ability to fix your own screw-ups at boot time, as compared to LILO.

2. There is a way. Fer the Life of me... can't quite pull it out of "Slow Media" as fast as I want.

There are three, I'd use one of them. There are reason to use each. But you need to make sure that the proxy/cache is setup *BEFORE* you do your upgrade.

apt-cacher apt-proxy approx

Hopefully there are versions in Woody, as it is late, and being tired.

I thought maybe you were looking for a way to do that automagically.

But, anywho. That'll work just fine.