OK, you have DHCP enabled. Therefore did you get an IP assignment? What was it? You don't need to list the last three numbers. If you didn't get an assignment then you still have something not set right in the setup wizzard. You need to run that again. Remember in that wizzard to select that you are connecting to the internet thru another computer OR A GATEWAY, which is what you are doing. Once you do the wizzard, did you reboot?
Have you examined your Network Connections? There is where you can see the IP assignment, including the subnet mask. I assume the drivers are right for your wifi adapter since you said it works for the home lan.