WordPress password autogeneration

Hi

Right so because of various reasons and requirements for a site I am making I have had to use a number of different plugins to handle the login and registration process. The plugins involved are:

Login With AJAX ++ > login widget that seemed to suit site needs best

SB Welcome Email Editor > send customised User name and password emails

Theme My Login > To enable login and registration to be contained on a page

WP User Registration > to add anti spam and other fields to the user registration

Now on the whole they all seem to be getting along. However when someone registers they receive 2 registration emails. One is in the format of SB Welcome Email Ed with and auto generated wordpress password and the other a text based email with the users own chosen password.

Firstly how do I turn off the auto generation wordpress password and secondly how do I get WP User Registration to use SB Editor to send emails.

Advice on this as soon as possible would be fantastic.

Many Thanks
jon