If you're getting a .cgi or .pl script showing up as just the text in your browser instead of being run, that means you don't have CGI enabled for that domain. If you've got a plan that allows cgi (anything besides crazy domain insane), you can turn it on via the web panel.. under the domain > manage domains area. (click on the  link for the "http" service for the relevant domain).
Also, basically anywhere an installation script says you should install something with "777" permissions, you should really install as "755" on our server. It will work just the same for the script. The reason for this is on our servers cgi scripts run with the same permissions as the main user for the domain, so nothing needs to be 777 (which means ANYONE can read,write/delete, or execute it) to be able to be written to.
hope that works for you! You may want to contact firstname.lastname@example.org if you can't get it going too.. make sure to include the actual url you're having trouble with!