08-16-2012 02:55 PM - edited 08-16-2012 02:57 PM
Easiest and cheapest way is to share it over the network from your PC, but that means leaving your PC on so other computers can acess it.
You could try something like thishttp://www.amazon.com/s/ref=nb_sb_noss/192-5607767
But I can't say how well it works.
If you are thinking about upgrading your router you could get one that supports USB like Netgear ReadyShare.
If you can find a Goflex Home base unit then your drive will fit into it and you have a NAS, but the base units generally aren't sold separately.