Hello leytone10. Nice to see more Ubuntu users on Rootschat.
And hello again to downside. You could have a look on the linux incompatibility list to see if your modem's listed:
http://leenooks.com/On Ubuntu there's no root user enabled by default, instead the first user registered (and any subsequent user given sufficient rights) is able to perform administrative tasks through sudo, which is a bit cryptic at first but does give some advantages. It is possible to enable the root user if you prefer to have one.
Task bar? They're known as panels in the land of Gnome and you can rearrange the layout so that it resembles Windows if you wish, with a launcher in the bottom left corner.
Hopefully, Thomson are referring to the embedded software in the modem when they talk about a firmware file and not a custom linux kernel (you don't want a modified linux kernel from them as typically these kernels are only compiled for a handful of distributions & so might not work with yours). So the linux firmware file is probably just their latest flash code supplied with an installer that's executable on a linux system, but without instructions!
Maybe this upgrade will make it work with later kernel versions?
Have you considered getting another modem?
Arnie.