My 6 year old MacBook Pro needed a new wireless card; seeing that I couldn't even connect to the internet in my own home. It was definitely time to upgrade the card.
The instructions were straightforward. Repair was quite simple. I was scared at first but Mac is very forgiving!
I'm not sure if this has happened to others but the release button to open the laptop was a tad jammed. The Genius Bar fixed that problem. It couldve been the way I was handling the repair.