Help – WordPress Duplicate

Hi,

Ok I am using wordpress for company intranet so its a local install on a server.

I need to do some work on it and change it and don’t want to stuff up the orignal so I want to have two servers one with the company intranet working and another for a test intranet which I want an exact copy.

I have an exact copy of the first server but changed the name of it because you can’t have two servers with same name.

Now because I have changed the name of the server now testintranet.com WordPress will not work so I need simple step by step instructions on how to change files, database so it points to the new name.

I am using MySQL command, PHP, Apache.

I think the main change is in MySQL but I don’t know the commands to access database and what not so I need help and simple steps?