php scripts

Hello, I am basically just a wordpress user and do not have much experiance with php scripts.
How can I add something like this http://codecanyon.net/item/freelancer-office/8870728 ?
Can I install something like this into a wordpress only hosting? I have two different hosting companies one with wordpress hosting and Ipage shared hosting...

Thank you for your help.

I would like to have this on my site as a option for people that help with the site to log into.. Is that posiable?
For instance I have a website hosted at www.xxxxx.com can I have this php script load if thy go to www.xxxx.teammembers.com
Or something like that?

No PHP experts here?

Yes you can do that if your hosting meets the PHP Requirements (which most basic hosting plans should). You can install it on wordpress only hosting if you have access to a file manager.