Yes PokerStars does have an option now to store HH on your local hard drive. From the main lobby, go to requests and choose "Hand History Options" or something close to that.

Then set it to store them locally and to hold onto X number of days.

Then in PT you need to tell it to look for them in the right place, most likely "C:\Program Files\PokerStars\Hands History" (or something like that.)

Sorry for being a little vague, but I'm at work right now.