Whenever you visit a website that site needs to know where to send the data to. For that reason your internet service provider allocates an 'IP address' to your computer. A small minority of people have 'static' IP addresses (which never change) but the vast majority of internet users are allocated a
different (= 'dynamic') IP address whenever they connect to the internet.
So, assuming that you've got a dynamic IP address you can get a new one simply by disconnecting, and then reconnecting, your router from the phone socket.
To see the IP address currently allocated to you, go here:
http://whatismyipaddress.com/
(My IP address is currently 79.123.72.75)
After reconnecting your router you can go back to that site, to see if the address has changed.
Cookies are small packets of information which are dumped onto your computer when you visit websites, so that you'll be recognised when you re-visit the site. (Cookies can also be shared among websites, so that your browsing habits can be monitored for advertising purposes). The Answerbank has placed a cookie onto my PC (when I logged on), telling their computer that any messages I send are coming from Buenchico (so I don't have to log in separately every time I submit a post). If I now go away and visit some other sites (without logging out from AB), and then come back here again, I'll still be recognised as Buenchico because the cookie will still be there.
You can remove cookies from your computer by following the instructions here:
http://www.wikihow.co...r-Browser%27s-Cookies
However you may then find that sites which previously recognised you automatically now need you to login again.
Chris