Follow this tutorial by raven : *www.thinkdigit.com/forum/viewtopic.php?t=15577&highlight=sharing+internet+connection
If its just 2 computers then you dont need a hub/switch.Since its a dataone connection incase the dataone router doesnt have ports to add more computers then you will have to get a hub/switch.Get UTP CAT5 cable of appropriate length & follow the instructions given in the tutorial & you should be just fine.
alternatively u can use a switch to do same job.
The only advantage in latter case is u need not open both computer to accesss internet
Thats not correct.I think you meant to say ROUTER.
A switch is just a multi-port repeater providing ports for the addition of more computers.