If you are not comfortable doing it yourself, then perhpas you should check your local computer businesses. The people in our area charge only $40 an hour, and what you want to do would take no more than 30 min for soemone that knows what they are doing. SO check your yellow pages or google you zip code and see what you get.
If you feel like doing it yourself, you probably don't really have to open the laptop. If you look along the sides, there should be a panel a little larger than a deck of cards (the shorter side of such a deck) with a screw in the middle or on the bottom. That is the drive housing. I believe, you carefully unscrew it and you shouldget a sort of tray with the drive in it.
Look it up online, I'm sure there is a more detailed explanation elsewhere.