Uolricus te Erlake wrote:

I have two routers and a cable modem with several computers. However, the
machine colocated with the cable modem can't "see" the ones downstream,
though they can "see" (at least PING) it. I thought I set up the network
identically on each machine but don't even have a network access icon in
the taskbar on that one machine.

None of the machines "see" each other in Network Neighborhood, nor do they
"see" what's in their workgroup. They have, of course, been assigned to
the same workgroup.

Why do you have two routers? If you have two routers, I would expect the
results to be exactly as they are - two separate networks.

If what you really want the second router for is more wireless coverage, you
need to turn off DHCP on one of the routers and turn it into a wireless
access point instead or if wireless isn't desired disable that capability in
the router as well as DHCP and just use it as a switch.

Then all machines will be on the same network and can share files/printers.

Malke
--
MS-MVP
Elephant Boy Computers - Don't Panic!
http://www.elephantboycomputers.com/#FAQ