Joining all login of different galleries at a unique login access point

[Candy-Arts]

Good Day,

I need to know if it is possible to join all the login of the different galleries, to only one access login point at the top of the website page, having 2 lines for login, this being, username and password.  Is there a way of doing this, and how must I do this?

http://www.arte-gap.com/Artists/Artistas-pt.html

Thank you for your help, I do appreciate very much.

[Sami]

You can install a forum and bridge all gallery to that forum this way all users can login to their gallery by login to forum

[Candy-Arts]

You can install a forum and bridge all gallery to that forum this way all users can login to their gallery by login to forum

Hum!   Do you mean, installing a forum like SMF or phpBB?  Is there a link (example) somewhere that I can look at the final work?

[Sami]

Hum!   Do you mean, installing a forum like SMF or phpBB?

Yes

Is there a link (example) somewhere that I can look at the final work?

Sorry I don't have any ... BTW it works