Networking Problem - Can't connect to internet

[SSJpn]

I have a 4 computer network at my apartment. 3 computers can get on internet fine. The 4th computer is networked properly (it can see and connect to all other computers on the LAN) it just can't get on the internet... if this is enough info pls tell me how i can troubleshoot. If you need more specifics pls read on about my network setup.
____________________________________________________________

cable modem --> HUB --> PC1
|
|
> router -> PC2,PC3, PC4

PC 4 was the computer with the problem. So i switched PC4 with PC1 so now the computer that can't get on the internet is the computer connected through the HUB. PC1 connected to the internet fine through both the HUB and the router, so i know thats not a problem. One thing that is a bit strange is that PC4 is the only computer that can get to the router setup (192.168.1.1) and it can do so even when connected to the HUB and not the router. Also, on my DHCT (dynamic host client table??) it only lists PC4 and PC3 even though PC4 is now connected to the HUB.

any help would be nice to get my last computer up and running on the internet.

 

[edfair]

You have TCPIP ID problems. The router access is the clue. Ed Fair
unixstuff@juno.com
Any advice I give is my best judgement based on my interpretation of the facts you supply. Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[FatesWebb]

your tcp/ip settings are messed up somewhere maybee DNS try connecting to yahoo using the ip

http://66.218.71.81

if this works it is a problem with DNS... also check your gateway and dhcp settings to see that they match the other machines. finally are you using NAT or PROXY or ICS? js error; 67 on line; 36 of signature.class