IF you have you DAP-1360 set as Access Point then:
1) If your ISP supplies an IP via DHCP (Most likely)
Go into LAN settings and set it to Dynamic IP
2) If you have a static IP address from you ISP then
Go into LAN settings and set it to Static IP and add the address
IP Address :
Subnet Mask :
Gateway Address :
3) You probably also need to enable DHCP Server addresses (same setup page) for internal IP addresses for multiple devices attaching to the DAP-1360.