[Xrati]

First, call Dell and see if you can get a replacement part. Next the laptop will have all assembly screws on the back side of it. Simply take the screws out and remember to mark long and short screws if your model has any. You should be able to access the pads from under the cover. If you need to remove the keyboards, they come off from the front with just two screws and then you'll have to remove a snapped cover that holds the keyboard in place.

It's not rocket science, but just take your time and remember to use ESD straps!