No Task Bars?

[Wally]

HELP!

My P4, 1 gig, 2.4 mhz machine runs Ubuntu 8.04, 24/7. Dual boot with  XP 
sp3, which I only  have because I have never been able to get my scanner 
to work with Linux.

Last week I removed Evolution mail program since I use Thunderbird.

Friday I needed to reboot the machine after an update. Now I don't have 
the tool bars that are at the top and bottom of the screen.

Without them I have no way of running any programs!

Right clicking on the screen lets me change the wallpaper.

How can I get the toolbars back?

Or make copies of my Mozilla Foxfire bookmarks, Thunderbird e-mails and 
address book, then I can just reformat and start over clean.

Booting from the Ubuntu 7.10 disc, I was unable to find my Mozilla files 
to make copies.

Thanks,
WALLY