Hello, am new here so if this is posted in the wrong place I apologize in advance. What I need help with is this:
To use a PHP form-mailer on a Linux Dedicated or Virtual Dedicated server, create a Web form in HTML that links to a PHP file

I have the web form created in html, now how do I link it to a php file?

Any help with this would be greatly appreciated.

I assume you don't know any php yet and have not done any serverside scripting, right?
Basically what happens is this:
- Your html form gathers data.
- On submittal the data is sent according to what is specified in the form tag. eg: <form method="post" action="blah.php">
- At the server apache gets the submittal and see's that it's going to a .php and so executes blah.php and passes you forms' data to it.
- At that point you script takes over and does whatever you write it to do.
It could send a response page , or not etc etc etc... it's all up to you.
There are also scripts out there which are pre-written to accomplish particular tasks. You just install them and fill in the blanks.

There is an old standard perl script which works similarly specifically for generating emails from a form submittal called "formmail.pl" which has been replaced by a more secure "tfmail.pl"
Perl scripts might need to be located in a certain directory in order for the server to execute them.

Here is a very good tutorial http://www.tizag.com/phpT/
You may want to start at the beginning , you may want to read ahead to "forms" and you may then want to read ahead to POST & GET