Intro.: I am going to tell you how to install a dock and delete the taskbar in Ubuntu 10.04 Lucid Lynx.
Step 1: Find the Terminal.
Terminal should be under accessories. Open It Up.
Step 2: Open Up Terminal
Open Up The Terminal. Type: "sudo apt-get install avant-window-navigator" (Without Quotes). Click Enter Now.
Step 3: Passwords
Type In Your Username's password.
Step 4: Hit the Enter Key.
Hit The Enter key.
Step 5: Type Y.
Type Y at any question it asks.
Step 6: Opening the Dock
In the top left of your screen, click the Ubuntu Logo and navigate to: Accessories/Avant Window Navigator. Click that. Open The Dock.
Step 7: Log Out and Log Back In.
Log out and log back in to be sure it works. Open the dock again. :)