I ran a few searches on this problem, but failed to find any solutions that applied to my specific problem, so I am posting this in the hopes that someone out there can help me, as this problem has been ongoing through all and every tutorial and every different setup! My network setup: I am running a Westell VersaLink Modem/Router that was provided from Verizon Wireless. My computer, A Dell Dimension 4600i is connected directly to it via ethernet. Another computer, a Dell Dimension E510 is also connected to port two via ethernet. I have a Dell Latitude laptop running Windows Vista Business through the wireless connection. I also have a Linksys Wireless print server connected to the router by means of the wireless connection. I have the DHCP server enabled on the router, except I specified a specific address for the print server to allow it to operate nominally. However all the computers are set to recieve their own IP from the router. My problem: My computer (which I will designate as computer A) connects and recives full internet connection. Same with the Dell e510 (computer B) and my laptop (wireless A). The print server (wireless B) runs just fine, allowing me to print wirelessly anywhere from any of the three computers. So I know all the connections are good. The problem is that Computer B sees Wireless A, and Wireless A sees Computer B. Both can access each others files. Computer A cannot see Wireless A, and Wireless A cannot see Computer A. Computer A shows Computer B in the network group, but cannot access it (gives an error that I do not have permission to access MSHOME). Wireless B recognizes all computers and prints just fine. I checked the Westell Versalink and it shows all computers as logged and online with an IP address, but shows Computer A as "inactive" (my computer). All are shown under MAC addresses, and all are shown under the DHPC. All have the same settings and all of them ping each other. Questions: Does it have anything to do with the firewall? Comments: - File Sharing is on - All computers share same TCP/IP info - Followed all tutorials, with no avail Help! Thanks!!!

i would add a second ethernet card to "a", run one cable into the wan port on the router, the other cable from newly installed ethernet card to another port on the router. i betcha it'll work then.

Please ignore mountain. He needs to be banned from this forum already. What he doesn't realize is that his solution is not only ridiculous, for the fact that there's probably a simpler solution... but also for the fact that Windows does not correctly route traffic, when two NICs are installed. (you can't choose which interface to use for the default route.) Oh, and also because connecting a PC's NIC to the router's WAN interface is just plain dumb-thinking. Winhelp- It sounds like some of your machines are either configured on different workgroups, or do not have File and Printsharing enabled. Also, make sure the "non-working" machines have at least one directory or file shared. Are all machines able to PING each other? (you may have to temporarily turn off the ping host's Windows firewall to test this.)

All computers and devices are able to be pinged except for my computer A. File and print sharing is enabled, files are shared, and all computers are in the same office group.