Quote:
	
	
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					Originally Posted by homealone
					
				 To be honest I would think about getting a router, it is, by far, the easiest way to share an internet connection across a network. | 
	
 
What he said ^^^ 
 
A router would be much easier. The modem would connect to the router via ethernet, & then the router would connect to the two PCs via ethernet.
You can get a good, cheap, router for around £30, e.g. 
Linksys BEFSR41
Alternatively....
Although ethernet is better than USB for connecting cable modems, as it uses less resources & is more stable.... you 
could connect the modem to the PC using USB, instead of ethernet, which would free up the PC's ethernet port, enabling you to set up a nice simple network between that PC & the other one, using ethernet. Easier (& cheaper) than buying extra things like a USB bridge to let you use the USB port to network the PC.