First off, you should recommend in the most strongest of terms the customer update to the most current version of WordPress.
The reference to “menu buttons” doesn’t give enough information to really make any suggestions.
Ok.. what I meant was in WP 3+ it had an option so you could manage the navigation menu. In 2.7 I couldn’t see anything.
But I figured out you have to do it manually… doesn’t seem to have been a feature then.
Nope, it was new in WP 3.0
As @edward suggested, it really is imperative to upgrade that WP install, for security reasons. 2.7 is quite vulnerable