Adding existing Calendar to New Website.

[CChurch]

Hello, I am totally new to PHP and thus illiterate about it.
The Media Team for our church, that I am part of, is designing a new DNN website and would like to use the existing website PHP calendar on it.
I can tell that it's simply not as easy as copy & paste into HTML, nor have I come across anything in the forums covering this. Can anyone give me an idea of what will need to be done to transfer calendar to new site- or does it require new install, etc. Any help would be greatly appreciated....

Thanks, CC.