There is an INSTALL file within the distribution:
[2] Open the file config.inc.php3 in your favourite editor and change
the values for host, user and password to fit your environment.
Have a lok at Documentation.html for an explanation of all values.
Should be something like:
$cfgServers[1]['host'] = 'localhost'; // MySQL hostname
$cfgServers[1]['user'] = 'dbadmin'; // MySQL user
$cfgServers[1]['pass'] = 'bla'; // MySQL password
Point your browser to http://localhost/phpMyAdmin/index.php
Daniel