ME&YOU wrote:
> Then run the ping command on the wireless PC. See if it can ping the wired
> PC's IP address. See if it can ping the gateway. Then ping a website (like
> www.google.com) from the wired PC and make a note of the IP address. Ping
> that address from the wireless PC.
>
> Sorry but how do I do that?

Open a command prompt and type

ping www.google.com

or whatever site you need.