If I have a Olympus Ultra Zoom 7.1-Megapixel Digital Camera, how can i take a picture to where the back is....

blurred while the subject is clear?

change your appeture down to as low as it will go, F2, F2,8 F4 should all do it for you

select the smallest apeture value, so its f2 or f4, and the stand back from the subject and zoom in on the subject...
for best effect, get your subject to stand away from whatever is behind them too