Do I have to search for my AE hard drive every time I restart my computers?

I have a LaCie HD on my AEBS, which I use to hold my iTunes and iPhoto libraries so that they are more easily shared (I'm hoping) between the three computers in our house.

It works fine, but every time I shut down or re-start one of our computers, I have to show it where the iTunes or iPhoto library is found on the LaCie HD.

Is there any way I can make my computers automatically go to the last iTunes or iPhoto library they were using, and to remember where that library was, regardless of shutdowns, etc.? Thanks.