Help with networking computers

[UnworthyBean]

Right, so I have my main router set up in the house that serves one side of the house, Then another router which serves the other side of the house (The walls seem to block all of the wireless) Problem is, no computers on the first network can see the computers on the other.

Is there any way to solve this?

Set up is literally : Modem - Router 1 (Several computers attached) - Router 2 (Several computers attached)

Edit: If it is any help, The first Routers IP address is the standard 192.168.1.1. The second has given itself 10.0.0.1.

 

[UnworthyBean]

Power lines.

It's not a major problem so we're not going to put any money into it, Would just be nice to get it working with what we've got.

Surely it's possible?

 

[UnworthyBean]

You second router is acting as a router, really it needs to be a switch/wireless access point. Does it have any spare ports on its built in switch? Easiest solution would be to disable DHCP on router 2 and plug it into router 1 via a LAN port not a WAN port. This is assuming you have spare LAN ports on the back of router 2

Cheers, Working now. Probably easier as most of the settings are now managed on router one.

As for the other answers, I already have all the equipment set up, I didn't want to buy anything else, was just nice to have a few file sharing options.