SurferTim:
What happens if you try this from a web browser?
http://server/add_db.php?id=12&name=john
Replace "server" with the server ip in your code. Do you get a response?Insure there is a page with the name add_db.php in your server's home directory.
I actually am able to connect to my server, though when I try to connect to my php page it tells me it can't find the page, supported by a 404 error code in the serial monitor. And yes, i'm sure the page is on my server.