If 1394 Firewire adapter is the only connection that shows up in the Network Places, then this maybe an indication of the following:
1. bad NIC(network interface card)
2. driver not install properly
3. corrupted driver files.
4. NIC does not exist.
Can you go to Start->Settings-Control Panel- System->System properties->Hardware tab. Then in the Hardware tab, click the device manager. Check your Network Adapters to see if your NIC driver shows up here. If the NIC driver does not show up here, then open up your computer and reseat the NIC card. When windows started loading up, it should automatically detect the new device and prompt you for the driver's disc. If windows does not detect the device, try remove the NIC card and put it into a different pci slot and repeat the process.
To get all computers connected to your network, the NIC connection must exist in your Network Places. Try the above and let me know how you get on.
Edited by Clifford Tan, 06 October 2010 - 03:58 AM.