where do I find this and how do I delete or deactivate it.

I have no idea what you're talking about...but you're active desktop...I think that's the one that's on your desktop right now :)

To get rid of it..look through the galleries...pick the one you like...click on your screen size...right click and then click set as wallpaper :)

yes I have an active one that I downloaded that I want to get rid of. It covers up the standard desktop.

I believe what you are refering to is in the display properties. To get there right click on your desktop and select properties. Along the top you want to pick the desktop tab. Then click the customize desktop button. Next you want to click the web tab. Then make sure the check box inside the box is not checked.