if you're running KDE, there's a program called "Kpackage" that lets you install/uninstall/upgrade packages with a GUI interface. I believe it's located in K-Menu under "System" or "Settings".

As you'll soon find out, though, file dependancies are a bitch. Its one of the things I really miss about Windows: "Add/Remove Programs" in the Control Panel.

Otherwise, if you're a command line junky you can use dselect which is a menu driven interface for dpkg.

Finally, if you're a purist, you can get a list of all the packages installed using the following command:
Code:
dpkg -l | more