2 gallaries 0- how do I make only one sign up?

[batman1056]

See www.caferock.co.uk

I use 4images in two areas one which is listed for tones and the other for images - I am trying to make a way so when people sign up for one of these they are automatically added to the second one.. How can this be done.

I dont want people to have to sign up for Two  gallerys, so a combined user would be great.

Also I am moving the site to a Mambo CMS, is their anyway on combining the user log in to this or SMF?

Many thanks