go into start menu, click control panel, click DISPLAY, and choose a new background or theme.
this should work
I have managed to some how accumulate a "spyware warning" message which is set as my desktop background. I have tried deleting the file file://C:\WINDOWS\Web\desktop.html (this is supposed to be its URL/address) but it just wont go away. If you click on the background you are taken to the http://www.topantispyware.com/overview.php?38 site.
I have the spyware doctor programme but it doesnt seem to detect the file.
Can anyone help?