Lan help

[Steamer]

Right click on My Network Places and go to properties or go to Control Panel and click Network Connections?

Make sure the drivers are up to date.

If its that your trying to get to other PC's on your LAN....

If your on Vista make sure network shares are turned on threw ALL the confusing paths of the options.
XP turn on Network sharing.
Make sure your firewall is allowing access from the other IP's on your LAN.

Some routers are finicky and require you install the software on your main PC to access the internet or other LAN's if you have one wired.... Some are just crap all together.

Your question kind of confused me as I don't exactly know what problem your going threw or what you wanted an explanation for.