thanks a lot, incidentaly, I stumbled across that snippet of code while browsing through the manual after I had posted this. Somehow I knew I'd find it and make a fool of myself 😃
This is what I made (in case anyone cares)
if (strstr($_SERVER["HTTP_USER_AGENT"], "MSIE 6"))
{
echo "You are!";
} else
{
echo "You aren't";
}