I've chosen for all messages to be kept by ticking that box in windows live messenger. I need to know what directory they are stored in and if how can edit them? Please help because this is really important.

You can find out which folder you've saved your chat logs in my accessing the "Messages" tab.

Open up Options >> Messages (It's third from the top) >> Look near the bottom; it's above the Handwriting section on that page, there's a box where you can change where chat logs are stored.

Thank you

My pleasure.