Reply to 2nd HD in a MackBook Pro

Hey everyone, I'm looking to remove the cd drive and have a 2nd HD installed into its spot.
Where would the best place be to have this done?
I guess apple would do it but will prob. over changer me for it.
Is it something that i could do on my own? (I'm not all that computer suave)

I have a micro center in the area, would that be the better choice?
Thanks for the help.