KompoZer is installed on the lab machines in Room 612. If you want to use KompoZer at home (either for the class project or for setting up your own website someplace else), you will need to install it.
Installing KompoZer is easy. Simply visit the KompoZer SourceForge page, and click the download link. Now install the software in the usual way for your system.
If you have any problems then please speak to your instructor.