Watch the how-to vids several times, go slowly, and keep track of your screws. If you aren't super comfortable, just take pics as you go and then reassemble in reverse order. Don't force anything. If it's not coming off easily, check for another connection point.

If you don't want to do it, ask a repair shop the cost. Before agreeing, check out Microcenter's clearance stuff on their website and make sure to choose Denver location. You can get some fairly ok laptops for not a bad price. Example: http://www.microcenter.com/product/4...r_-_Black?ob=1 open box for 143.