* Everything below this is bonus info, and can thus be ignored without risk of missing the essential point of the post *
You can find your hand history through the lobby by clicking the button "My History". From there you can browse all the hands you have played. Unfortunately this information isn't stored on your harddrive, so there isn't any easy way to get it (happy typing).
There is a nice little program called Handgrabber, which will save the hand history to your harddrive when you play. Unfortunately it can only do this when you are actually playing the hand. This comes in very handy if you are using Poker Tracker (which you by the way should be doing). Handgrabber costs 10$ (you will be allowed to "try" it for 1000 hands for free though).