How do I find out my subnet mask and gateway? I am try to connect my wireless router.

On the router they will be in the LAN configuration section in the administrative interface. On a Windows computer, entering "ipconfig /all" at a command prompt (Start > All Programs > Accessories > Command Prompt) will list the information for each network adapter in the computer.

Common values for consumer home routers are 192.168.0.1 or 192.168.1.1 for the default gateway and 255.255.255.0 for the subnet mask.