Also read this blog post: http://errtheblog.com/post/28
It shows many good exampls on how to implement changing sidebars (e.g. wih different links as you said) for each controller or action into one single main layout.
Also read this blog post: http://errtheblog.com/post/28
It shows many good exampls on how to implement changing sidebars (e.g. wih different links as you said) for each controller or action into one single main layout.