I am not sure what your first attachment is trying to show. My page looks like the bottom shot. By chance your trying to use the advanced tinymce editor on a restricted width site. maybe set the box to basic instead.
Your second pioture I assume your talking about maybe a code mod you did for your
vb forum? I know I release a code mod that users can use that does what your picture illustrates. Feel free to modify that plugins templates to support any custom style you have installed on your site. The mod I release is coded to match the normal vb4 default style. If your using custom styles which have special html to display things then you would have to alter the plugins template code to match that style.