Howdy Listers, Can someone explain to me the mechanism by which SID acquires a value? For example, $FOO = SID; echo $FOO; produces something like "PHPSESSID=ade4055eef947f1a00cdb280470e859b" when IE is first opened and the page is loaded, whereas reloading of the page produces an empty string when $FOO is echo'd. Seems to have something to do with creating a browser instance. Thanks, David