Leigh, when you say "support emails", do you mean from the email lists you may be on? Your email address does not show up on the Members page - only you and the moderators can see it, but other members cannot.

To change your email address for those lists, go to http://groups.yahoo.com and click on My Account (it will probably be a small link near the top of the page.) You might have to also give your password.

The next thing you will see is your member information.
Click the first Edit button.
In the box labeled Alternate Email 1, put your new email address.

Be sure to click the Finished button on the lower right.

Then go into each of your lists (online) and look in the upper left-hand corner - it shows the email address list mail would go to. If it's showing your old address, then click on the email address and it will pop up a screen and let you change it.

Newsletter:
Do you have a copy of the newsletter in your mail? If so, go to the bottom and there is a link to click on that says "To unsubscribe or change subscriber options visit: " and then it gives a link. You should just follow that. Your email address won't be posted where the general public can see it.

Hope that helps