ok so. If you want to put an object on background, and the certain object is on another image, you have to just select the area (use the square select tool) which you want to put in. You can just select whole image

or you can just select f.ex. only dog, then edit>copy, then open the background image and type edit>paste. You can move it by the move tool(or whatever its name is, it looks like plus).
Now the 2nd thing you want to know. If you want to remove all the not needed area from the dog`s image you have to select the dog, you`d watch an tutorial on youtube. Just search `Gimp Selections` by Enselic. There you can learn how to make perfect selection. And just put only selected dog on the blue background.
This post was edited by Spark3399 on Jan 11 2008 02:24am