Can you go back over my original instructions again please. The DOS window should stay on the screen all the time. Did you type CMD in the Run box and click OK? What happens at that point? I need this to work because what you've told me so far suggests that you have a problem with your Network Interface Card.
Once you've got the DOS box open can you type the following command ipconfig /renew and then press Enter. Let me know what you get. Note the space between ipconfig and /.
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Do you know that we're all in line for succession to the throne? Really?
Well, if forty-eight million, two hundred thousand, seven hundred and one people died I'd be Queen.