|"I am permanently connected to the internet thru a modem and I get internet to them using a 10/100 (8)port Ethernet switch"|
You can't do that with a modem. You can only do that with a router that is also a dhcp server. Unless your modem is a router of course.
Post the results of ipconfig /all from each pc to review
Have you reviewed any of the how to network pc on the web?
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