Day,
If you are talking about the list for the class, then neither David nor Kathleen can now change what email you use for that, now that it's been set up.

You need to go into the Yahoo!Groups web page for the group. I don't know what the link is, but it will be in the bottom of all emails you get from the group.

Then when you get to that web page, click on the link that says Edit Membership.

Under Email Address there's a drop-down menu, and hopefully your glowing_day@yahoo.com address will be one of the choices. Click on that, and then click Save Changes.

If that address doesn't show up, you will notice that there's a link just to the right of the drop down menu that says "add new email address". Click on that and follow the directions to add the address. Once you've done that, choose that address as the one for the group.

Be sure when you are done to click the Save Changes button or it won't change.

Also it could take up to 48 hours for the change to take effect though it is usually faster.

If you want to be sure not to get emails until this change is done, you could temporarily set your Message Delivery to Special Notices and read the messages on the web page until the new change goes into effect.

Hope that helps.
Kitty