Go to different URL on logout (1.5.9 and above)

I have this working fine on an earlier 1.4.x install, as it was just a case of going into albums.php and inserting the url I wanted to jump to in the code where the logout link appeared..

However, the latest 1.5.10 has different behaviour when you click on *logout* and albums.php has been totally changed. I want to go back to a different page on my website when I click logout, the link is something like http://www.mywebsite.com/viewings/login.php?g1_return=http%3A%2F%2Fwww.mywebsite.com%2Fviewings%2Falbums.php%3Fpage%3D1&cmd=logout and always ends up back at albums.php?page=1 when I just want to make it go to http://ww.mywebsite.html/goodbye.html

Where would I tweak it now?