Setting Up During Installation

During installation, you're given an option to install by tasks/profiles instead of dselect. Is there any way to access this again later?

Re: Here's an easy question, how shutdown debian?

Tyler: Some of this stuff isn't entirely intuitive to us newbies, you know. Maybe this should be placed in the installation documentation, because when you're new to Linux (or Unix) it almost seems like powering off is the only thing you can do, unless you have a collection of Linux books at y