I need help with Microsoft Publisher ASAP!!!!! PLZ!!!?

what you need to do is not OPEN it as no doubt school doesnt have paint.net. Presumably your backgrounds are saved as jpegs or similar so what you need to do is from within Publisher go up to Insert Picture from file, locate the various backgrounds and insert them as pictures. Then resize appropriately and then right on of mouse down to order, send to back so they are behind the publications you are going to design. Alternatively, put them on the back layer, i.e. CtrlM, but remember to do CtrlM to return to front page.