Sprint HTC Hero :: How Do I Turn Off Google Messaging / Conversation Notification For Email?

I have just updated my phone to 2.1. Also I have two email accounts. One Gmail and one dslextreme account. It used to be that when I got email from one or both accounts I would get a little envelope in my notification bar. Dragging that down it would show me the email in the Gmail account and the dslextreme account. But now I have a third notification with the google M in it. If I click it it opens a "conversation" window with the email. I can respond to it and it works just fine. But if I click on the Gmail email I get the usual looking email format. Now the interesting thing is if I ignore the google M and go straight to the google email and deal with the email from there the google M conversation disappears. Thank you for bearing with me through that lengthly explanation but here is my question. How do I turn off this google M conversation? I don't want that third notification nor do I want that style of email delivered. I want to go back to the standard type of email delivery. It's coming to my phone alright but I don't want dual notifications. I remember when I was setting up this new OS that a box came up and I checked this google M not understanding what it was but I have looked through all my settings and can't figure out how to shut it off.