do u use a ppp0e connection to connect to it ?
your best bet is to get a wireless router , configure your connection on the router and you are done.
alternately if u just want to share it via your laptop then just configure the same over "bluetooth" (all laptops would need to have a bluetooth internal / external adapter) or share it via wireless , the other laptops would connect to your laptop via their wifi and get the connection.
both methods, simple and easy and no hassels with wires or anything like the hub / switch etc.