Enabling Ports

I would like to know, how I can run a script such as our help desk software from a certain port, for example:

I want to run:
http://www.blueoceanhosting.com/cgi-bin/pdesk.cgi

From:
http://www.blueoceanhosting.com:2400

How can I run a script like this, from a customized port? I have seen this done on numerous websites, but can not find out how to do this.

Please help.

Thank you.

 

 

 

 

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