Basically, I now have my own PC, and I bought a SiteCom router so I could have the internet on it.
Now, the PCs can see each other, but the internet won't connect with the router in. I can connect to the internet straight through the modem, but as soon as the router's in, neither PC can connect.
My ISP is Virgin Media (formerly NTL) and my SiteCom router's model number is DC-202