If you have specific types of router i.e Netgear you need to go into the routers home page (will be an ip address, and a username and password under the router or in the papers that came with it)
and type the Mac addresses of the other Pc's into the router page their will be an option for adding other PCs to it (cant remember what its called from memory), and that will then allow them to connect to the router and not drop the connection.
to get the Mac addresses open a command window - run, cmd.exe and then type ipconfig/all and hit enter - scroll to the top and there will be your mac address
