How to Install a One-Click Install
Installing an Application
Log into your DreamHost panel. Under the Goodies menu, click the One-Click Installs link.
The One-Click Installs page displays the catalog of available applications. Click the icon for the application you would like to learn more about.
The App window displays details about the application. Click the Custom Install button.
Select the domain to install the app under, the folder/directory to install it in (if you want to install it in a subdirectory), and to create a new database or use an existing database.
After clicking the install button, a success message reveals your user name and password for the application.
You'll also receive an email with the login and steps to finalize the installation.