if ur password is simple i.e. made of small/cap letters and/or digits (upto 6-10 char length) then u can use any rar password recovery software to find password .. my favourite one is Advanced Archive Password Recovery : Unlock password-protected ZIP, RAR, ACE and ARJ archives quickly and efficiently ... of course u might need to keep ur PC running for 2-3 days even on Quad Core

but if ur password is complex i.e. combo of small and caps as well digits and/or symbols then better forget those rar photos ... or give it to some professionals who can have clusters runnings to find only password

btw ... why password was used? really family memories?