Then in GUI select Modem->Connect
Then select “Bell Mobility” when prompted.

Its quite easy to do now in Ubuntu 11.04, really just one step:

sudo add-apt-repository ppa:n-muench/burg 
sudo apt-get update 
sudo apt-get install burg burg-themes

However if you are using 10.04 or 10.10, follow the instructions below:

First, enable the repository for burg by editing your /etc/apt/sources.list file to include the following for Ubuntu 10.10 (Maverick):

deb http://ppa.launchpad.net/bean123ch/burg/ubuntu maverick main 
deb-src http://ppa.launchpad.net/bean123ch/burg/ubuntu maverick main

or use the following for Ubuntu 10.04 (Lucid)

deb http://ppa.launchpad.net/bean123ch/burg/ubuntu lucid main 
deb-src http://ppa.launchpad.net/bean123ch/burg/ubuntu lucid main

Next, (optional) to remove any warnings about gpg signatures, enter the following commands:

gpg --keyserver subkeys.pgp.net --recv 55708F1EE06803C5
gpg --export --armor 55708F1EE06803C5 | sudo apt-key add -

Alternatively, if you find the pgp serer gives you an error, you can try this one:

Then we need to update apt and install burg:

sudo apt-get update
sudo apt-get install burg-pc burg burg-themes

This will prompt you to select several options along the way, so far I’ve just selected the default options since they seem to be detected from your existing grub install. The important one is to select the correct disk (Note: I’ve only tested in a non-raid system, so I don’t know how it will behave with this setup).

On the next restart, we should see a graphical grub menu, something like this:

Ubuntu 10.04 with Graphical Grub Template

By default you will probably get the ubuntu template, and you can change the template by pressing ‘t’ during the grub screen. It should also remember which one was last selected.

Note: I have experienced some problems with a fresh install of ubuntu 10.04 and SLI video cards. Burg’s graphics mode seems to confuse ubuntu and it gets stuck on boot. If this happens, you can boot in recovery mode and install the restricted nvidia driver. Then on next boot everything should be fine.

Note 2: Occasionally, when Ubuntu updates, grub may install over your burg installation. In order to get burg back, you need to issue the following command:

where /dev/sda is the partition you want to install burg onto.

Note 3: You might find you have some extra entries that you want to remove, for example the recovery entries or whatever else. You can either edit the burg.cfg file directly located at /boot/burg/burg.cfg and or you can edit the files in /etc/default/burg and /etc/burg.d/. If you use the second choice, you will need to run:

in order to regenerate the new burg.cfg file.

Sources:
https://help.ubuntu.com/community/Burg
http://ubuntuforums.org/showthread.php?p=9231199