Sure you can do so.
Follow all the information that come with the package or find the installation information from forums, or goto php.net
You can't just install and have your codes running. You need to setup something first and have the apache server running on your computer.
First, uninstall the package and try to get the apache running.
After that, you can use the code :
<?
echo phpinfo();
?>
If this gives you the page that contains all the information about php inside your computer, then it means you're ready to show your boss how cool php is !! 🙂