I have an oscommerce website.

When people subscribe to newsletters in front page or in their account page, I need the database to go to mailchimp database.

In the account page there is tick box to subscribe. I need this to work with mailchimp.
Guests can subscribe by typing email address within the website.

I already have list in database so I need this exported to mailchimp maybe with a script.

Also I need to be able to import the mailchimp list to osc and send newsletter also through oscommerce php mailer.

Please bid only if you have confidence.

Thanks.