Simply pick up a router with am ethernet switch built in. it will allow both pc's to go on line at the same time
http://answers.yahoo.com/question/index?qid=20080807061...
You did not say if the router had any other computers hooked to it. IF it does not, you can use the router by plugging the ethernet cable that is currently running to the router, into the modem instead. Then swap the two cables at the route...
http://answers.yahoo.com/question/index?qid=20071216145...
Cat5 Ethernet is not the same as a Telephone Line. It is a Data Cable and communicates with 4 Leads or 2 Pair, for Send and Receive signals. IP addresses are assigned to the computers so the information get Routed correctly. So get a Router...
http://discuss.pcmag.com/forums/thread/1004384637.aspx
An Ethernet hub will certainly get the job done, however, many Ethernet hubs have been replaced by network switches to improve performance. Switches are also referred to as intelligent hubs.
http://www.broadbandinfo.com/cable/hardware-and-wireles...
if it can connect both at the same time it wouldn't really be a splitter. It would be either a router or a hub. I can't think of any hubs or routers with this functionality however with more information there is probably a solution this pro...
http://answers.yahoo.com/question/index?qid=20081123011...
They can yes, but you will only have access to the internet on one at a time. You would need a router to have two or more computers access the internet at the same time...
http://answers.yahoo.com/question/index?qid=20070919223...
You probably want to use a router because each device will need a separate IP address. A switch wouldn't work in this case.
http://answers.yahoo.com/question/index?qid=20091204103...