Cisco 877W Wireless Access Config Problems

Help! I have a Cisco 877W router which works fine for wired LAN clients, internet access no problem. I am just setting up the wireless access but am not sure about the SDM config, could somebody please advise?

It seems to be to do with the bridge settings, can get a ‘limited connection’ from the pc but cannot ping, so doubt I’m really connected. Also if anyone can spot any obvious security howlers please let me know!