PureChat is licensed under the GNU GPL v3. You are free to fork the code and contrubute as you see fit. However, should you choose to send us a pull request, there is no gurentee that we will add it into the final install, as it may not fit the end goals of the software. To get started, create a database for your PC install. Then open ~/Includes/db_info.php and edit the information therein. Next, open the SQL file, select your PC database in PHPMyAdmin, open a query window and copy the paste the contents of the SQL file into it. Open the PC in a browser, and if there are no errors, you did it right! Thanks for looking, PureChat Team