toadhall - 3:31 pm on Jul 31, 2001 (gmt 0)

Try this:

<?
$browser = getenv("HTTP_USER_AGENT");
if ($browser) {
echo ("Browser: $browser\n");
} else {
echo ("Sorry, no can do!");
}
?>

Of course if PHP is not available you won't get the "no can do line" anyway but,...
Why not just ask your ISP? ;)