Install Plesk 7.5 Reloaded in CentOS 4.x

UPDATE
Plesk is a Web Control Panel Server and CentOS is an operating system for Web Server. CentOS is based on Red Hat Enterprise Linux. I’m trying to install Plesk 7.5 Reloaded in CentOS 4.x. Plesk 7.5 is supposed to be for CentOS 3.x
1. Download the Auto Installer and the RPM file for CentOS 3.3 from [...]