Installing, Uninstalling, and Re-installing

APPLICATION OR BOX TO USE	HOW TO START IT
Update Manager			System, Administration, Update Manager or System, Control Centre, (System) Update Manager
GDebi Package Installer		click on a file ending with ".deb", or Applications, System Tools, GDebi Package Installer
Synaptic Package Manager	System, Administration, Synaptic Package Manager
Add/Remove...			Applications, Add/Remove...
Software Sources		System, Administration, Software Sources
Preferred Applications		System, Control Centre, (Personal) Preferred Applications
Main Menu			System, Control Centre, (Look and Feel) Main Menu
Authorizations			System, Control Centre, (System) Authorizations