Perfect, thank you! For quick reference to anyone that has this same question, to find where they are stored; Can be found and changed in Preferences -> Network & Files -> Directories → Conversation logs and transcripts location. There should be a little 'Open' button right next to it. From the Firestom wiki.
Is there a way to view a list of people who I have recently IMed? I messaged someone the other day, but did not get their calling card. I can't remember what their name was. If I could view a history of everyone I have met, I would probably recognize their name. I'm using firestorm, if it matters.