I finally decided to get rid of that phoneline network and have installed ethernet cabling with a hub and a router. The problem is that each computer can only see itself, not the other computer. Computer1 is working fine as far as internet access (but cannot see Computer2). Computer2 can't see Computer1 and has no internet access. On Computer1, I have "Obtain IP address automatically" set, and the router sets it to 192.168.1.100. When I try to set Computer2 to obtain IP automatically, it doesn't work. I have all the settings the same on both computers (gateway as 192.168.1.1, mask as 255.255.255.0, etc.) The hub shows both computers online. I tried to assign IP on Computer2 to 192.168.1.101, but then the DHCP radio button is not functional. I'm sure it's a simple setting I'm missing, but I can't think of what else to check. Some of you have helped me before and I'm sorry to be so repetitious, but every time I change something on the network, I can't get it to work again. I just don't know enough about how networks work so I can't troubleshoot them.
The router is set to "Obtain IP address automatically" as well, and it works fine with Computer1 but not Computer2. DHCP is enabled, beginning with IP address 192.168.1.100 (Computer1).
Also, Computer1 is set with DNS disabled. I tried that with Computer2, as well as trying to enter the DNS manually, and it doesn't work.
Workgroup is the same name on both computers. Both run Win98 (Computer1 is SE).
WHAT am I missing??? THANK YOU so much!