Definitely DIY. Not as easy as on a 986 (b/c they are in rear center console) but not too bad either. Just make sure you disconnect battery (-) term before starting. Here's a thread on 6speedonline.com:
Guide for removal of 987 Boxster door interior door panel complete. - 6speedonline.com Forums
I would recommend using proper plastic panel removal tools instead of a screwdrivers. At the very least, cover your prying tool w/ electrical tape to prevent scratching if metal or has sharp edges...
Good luck
