Hi Mansel,
I don't believe you can see the email address that you registered with in your profile. However, if you click on the User CP link towards the top of the page, and once the new page has loaded click "change email" from the menu on the left hand side of the page, this will give you a form to quickly update your email address.
Alternatively - if you reply to this post and include your email address (I can edit this out before it is published) I can take a look in the administration section of the site to see if it matches.
One other thing is to take a look in your "junk" folder as sometimes these emails are routed there instead of to your inbox.
Hope this helps,
Julia