Follow these steps to complete the tutorial:

1. The first thing to do is to run through the SiteWorx MySQL tutorial and create a database for phpCollab to use to store the information it needs.

   Create a database called 'phpcollab' with a user named 'phpcollab'. When you do this SiteWorx will prefix the database and user names with some text resembling your domain name.

   With our example domain of 'johnsmith.com' the database name is 'johnsmit_phpcollab' and the username is the same 'johnsmit_phpcollab'.
2. Download the latest version of phpCollab from the phpCollab website and unzip the contents of the zip file to your desktop using http://winzip.com. You should now have a folder on your desktop with all the files and folders you need to install and run phpCollab. Open up the 'includes' folder. Rename the 'settings_blank.php' file to 'settings.php'.
3. Upload the 'phpcollab' folder to your web hosting account. You should do this using an FTP Program. If you need help with FTPing files, you can check out the FTP tutorials on our tutorials page. Once all the phpCollab files have finished uploading, we need to change the permissions on some of the files and folders so the script can write to it. You can do this using the CHMOD command in your FTP program. If you don't know how to do this, check out the FTP tutorials on our tutorials page. We're going to use the CHMOD command as follows:
   • CHMOD the 'includes/settings.php' file to 777
   • CHMOD the 'files' folder to 777
   • CHMOD the 'logos_client' folder to 777
4. Now we can access the phpCollab install wizard. In this example, we'll point to 'http://www.johnsmith.com/phpcollab/installation/setup.php'. You should now be on the first page of the phpCollab installation. You should now be on the GNU General Public License page. This license states that you can use, distribute and modify this script as you see fit as long as you don't remove the original author's copyright information

Most people still use PHP 4 so is it possible to have version 3 be compatible with PHP 4 as well?

PHP5 will produce a more future friendly orientation; just remember not all hosts are rolling out PHP5 yet so the target market could get crippled.