Ok, give this a try..
First go plonk this in your theme's functions.php file, fire up a page once (the home page, an admin page or whatever), then remove the code.
$_the_roles =& new WP_Roles();
The above code will add the two custom capabilities i've used in the plugin to the editor and administrator roles (admin to, else you'll not be able to see and use the pages).
Alternatively (using the members plugin): Just add the caps shown above to the editor and administrator roles.
Then take the code from here (be sure to use the box further down the page to copy from).
And place it into a new file, just make sure you give the file a
.php extension, eg.
editor_options.php (but call it something else if you like).
Upload it to your plugins folder, and activate..
Ripped most of the form element code from the original options page, the only thing differing here is the saving mechanism for the options, which is done inside the plugin. Capability will be checked when using the plugin, users without the required capability won't see the menu and even if they could somehow get the page up will not be able to save any options.
Give it a shot and let me know how it goes.. ;)