CGI software install

We have a software that needs to be installed on a Linux webserver. The software is CGI based and is having permission problems. The Server has root access and runnning Plesk 8.2. It's going to require modification of the conf. files. The hardware is a dedicated Vhost - Plesk 8.2 30 Domain OS RedhatES 4 Raid Mirror. The software is a small japanese groupware with English setup guide. It's just a 5mb program that usually installs in 10 mins.