I have used GnomeBaker and it is very easy to use. To burn
ISO images just click on Tools and then select Burn CD image.
Then it will ask you to find the *.iso file and then start...its very
simple.

Install K3b via Synaptic and use that to burn your ISO to CD.

Once you've burned the Ubuntu CD you can upgrade straight from that
without rebooting. Just open your CD tray and close it, so the system
recognises it's an Ubuntu install CD. A window will then appear asking
if you want to upgrade Ubuntu. Click yes and it will then source the
upgrade partly from the CD and partly from online repositories.

I was unable to burn the disk. I think that the file is too big for a CD but
I tried it anyway.
It failed so I tried a blank DVD, that failed too. The error code was 255.
It slso said that sometime using the TAO mode will work. I have no idea what
that is.

I would use K3B as menchened and burn at slow speed. Like 10x speed. A fast burn
is not good for ISO.

I tried to find that but it was not in the list. [I'm on my other machine
and I can't recall the program name, systematic or something like that.]

perhaps is another one of those packages included only
on Edgy? What version are you using? Dapper?

Make sure you are selecting to make a ISO and not a Data CD.

I installed K3B and tried to burn an ISO image. It failed and I got the
usualy meainingless error message.