OOH! A technical question I can answer! How weird (don't get used to this, it won't happen often).
Anyway....
Go into your Control Panel, on the right, under "Options" you'll see a link called "Email Settings". Click on that.
Once in your email settings, click in the 5th box down that says, "Enable 'Email Notification' by default?
Enabling this option will automatically subscribe you to any topic you start or reply to."
Then you're all set! If it doesn't work, we'll have to ask the expert (Mike).