Adjust the settings of the wired net card (automatic IP) - Windows Vista

1) In the lower right corner of your computer screen, right click on the Icon with two computers then click "Network and sharing center":
network and sharing center

2) Choose "Manage Network Connections" on the left side of Network and Sharing center:

3) Right click "Local Area Connection" and choose "Properties":
Local area

4) Click "Internet Protocol Version 4" and "Properties":
Internet protocol

5) Make sure "Obtain an IP address automatically" and "Obtain DNS server address automatically" are selected:
Automatically IP

6) Click "OK" and "OK" again, the net card should now be ready for receiving an IP address from UoI.