It would be good to know what you are running now. Open a terminal
(Applications, Accessories) and type: lsb_release -a

You can also find out from Firefox at Help, About. We don't need the Firefox
version, just the Ubuntu version. There is an upgrade path that you must
follow. If you are running 8.04, for example, you must upgrade to 8.10
before upgrading to 9.04, the latest version.

Report the output back to us. If you are running an older computer, then it
may or may not be wise to upgrade. There are inherent risks with any
upgrade. If you use wireless networking then the card may or may not work
afterwards. Video is a big problem with 9.04, especially with Intel
chipsets. This is not due to Ubuntu itself, but the way the new kernel now
handles graphics and a new driver is needed and Intel in particular has been
slow to produce them. It is good to know what you may be getting in to.

ou will have to go in to software sources and change your settings
go to system then click administration the click software sources after that
you'll see a box come up it will say ubuntu software make sure all the boxes are
checked then go to the update tab click it and it will come up with a different
box make sure all the boxes have a check in them if not do so and them look down
at the very bottom if it says long term releases only click on it and change it
to normal releases and close the machine will reload the software channels and
the update box will come up telling you the a upgrade is available click it the
machine will ask you what you want to do and will give you options to remove
certain software or not just click yes and do what it tells you depending how
fast your machine is it might take awhile to upgrade when it done it will ask to
reboot after that you'll be good to go.