Forum plugin

Hello.

I have 2 questions:

1. I am making a very simple forum with limited options and I want to remove the email button in the header (beside the watched and subscribe to topic)
http://www.communtiypharmacists.ca/wordpress/?page_id=44/private-messaging/inbox/

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2. Does the membership button and the forum membership sign in to the same place. I am new with all this membership stuff and

SIGNUP PAGE 1 ???
http://www.communtiypharmacists.ca/wordpress/wp-login.php?redirect_to=http%3A%2F%2Fwww.communtiypharmacists.ca%2Fwordpress%2F%3Fpage_id%3D129%26action%3Dpage2

SIGNUP PAGE 2 ???
http://www.communtiypharmacists.ca/wordpress/?page_id=129

REGISTER FROM FORUMS ???
http://www.communtiypharmacists.ca/wordpress/wp-login.php?action=register&view=forum

What I'd like to do (if they all sign in to the same thing) is have a login on the sidebar available and showing at all times. Basically amalgamate the process to look like one system.

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