nnbnbnnbnbJust a possibility, but you could use PHP, obviously with authenticiation procedures or .htaccess password authentification. Use PHP's passthru command. Find out the command to change whatever you want to do on the machine. The passthru command will give the user feedback, also use the HTML tag <pre> to keep the PHP all nice and tidy when it feeds back the information from executing a command or a series of commands contained within a batch file.
Alternatively there is the PHP command 'exec' which simply executes, ideally a batch file with a list of commands. I would highly recommend passthru over exec as it gives feedback of the command, just as you would see in cmd.exe.
You can even dynamically create batch files using PHP, so as to execute commands at your own will be editing the files through the powerful PHP.
Please see the following links for a further read on passthru and exec:
uk2.php.net/passthru
uk2.php.net/exec
To demonstrate I have knocked up a very quick PHP file showing how to use the passthru command while keeping the structure intact.
<?
echo "<pre>";
echo passthru("ping 127.0.0.1");
echo "</pre>"
?>
Have fun. =]
