Well, it helps a bit but leaves out a lot of critical information.
You didn't say anything about "the web" before did you? So now I'm curious
regarding how you connect to the web. Either
- one of the computers has two NICs and is running internet connection
- has USB to modem plus ethernet to LAN running ICS or
- the D-Link box is more than a "switch" and is actually a router that
connects to the web via DSL. You didn't provide a model number so ....
- or .......
If the addresses are in the range 192.168.0.xxx then the D-Link box is
likely a router with DHCP enabled - and not a simple switch. Or, perhaps
this is being set up with DHCP and ICS on one of the computers using a
dialup connection to the internet?
I can imagine this as a possibility:
- The cables are home-made and aren't correctly wired. You can build a
cable with consistent pin-outs that is still incorrect because of the misuse
of the twisted pairs. The order of the wires isn't intuitively obvious.....
Depending on the length of incorrect cables, they may work, not work or be
flaky depending on their surroundings.
- See http://www.yqcomputer.com/
description of how to wire the cables. EIA/TIA 568 B is the most common
standard in use these days.