I have a 2wire cable modem, model 2701HG-B.. connected to the internet on my home network.. all machines that are connected to it can see the internet fine, but i am not able to connect to the other computer on the home network. What should I check on the router to correct this? All computers on the network firewall apps have been disabled.

That is that all the system can not communicate to each other on the same network but you can only connect to the internet what you are to do is to check the network places icon on the desktop and check if there is any icon of system connection if there is then click on network connections then right click on the connected icon for system connection and then click on properties then under IP address click on properties then check if the IP given to the system is not the same check for the remaining system . because the IP must not be the same for the two system or else there will be conflict in communication ok

This may sound silly, have you 'shared' these resources and granted appropriate permissions?

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