As an aside, there are three IP ranges reserved as "private" network ranges. They are: 10.0.0.0, 172.16.0.0-220.127.116.11, and 192.168.0.0 Regardless, I'm not sure what OS you're working with here, because you don't specify, but before the two computers can talk to each other, they've got to be not only on the same subnet, but their networking protocols need to be similarly configured. Assuming you're running Windows, make sure they're both in the same workgroup. Go to your Network Connections, click on the Advanced menu and select "Network Identification" and make sure they both display the same workgroup name. Once that's done and you've rebooted (if you need to), then you need to share out some resources to be available on the network. If you want to share, for example, your 'My Documents' folder, right-click on it, select 'Properties', click on the 'Sharing' tab, and click on the 'Share this folder' radio button. Click OK and then open 'My Network Places' on the other computer. You should see the shared folder.