The easiest way to do this is to purchase a cable DSL router and install network cards in all your pc's. The router will server as a DHCP server and allow all your PC's to be on the same network. You will need to consult your ISP to determine how you can connect the router to your cable modem. A good place to start is:
Dig deeper on Network Administration
Related Q&A from Retired Expert - Joel Johnson
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.