Hello
I have setup a lab here where I have 2 belkin routers and 2 computers (A and B)
Now,
A pings both routers and B
B can ping the router it is connected to but not the other 2 devices
You should have DHCP running on only one of the two routers.
The second router should have either a manually added IP, Subnet and Gateway or have IP settings automatically acquired from DHCP.