I have xp, With Internet Explorer, When I Close Internet Explorer I am left with Advertising. I have tried to stop this happening. Can you help Thank You.
Sounds like you have malware/spyware on your machine. Head on over to http://www.malwarebytes.org and use the "blue button" link on the left-hand side of the page that takes you to so that you can download this antispyware program. Install it, update it and then run it.
Others are available also such as SuperAntiSpyware and AdAware Free edition. Should help you get rid of those pesky adverts and probably loads of other nasties you didn't know were on there!