[HELP] Skinning the menu bar

Hi,

Lately, I've been working on tidying up two of my skins for final release. I've had a lot of fun getting round lots of small problems, but one thing completely eludes me. Some skinsout there skin the menu bar in things like notepad and photoshop. I have defined a graphic for the menubar background, and this graphic appears in skinstudio in the preview, but when I apply the theme, my menu bar just uses the classic colours as defined in my skin. Below are two screenshots.

The first shows my skin results, with menubar basically unskinned and the second shows a theme where the bar is skinned successfully. I've had a look at the code in notepad, and I just can't see where I'm going wrong. Can anyone help?

post-33031-1139657606_thumb.jpg

unskinned.jpg
unskinned.jpg

#358513

here's the second shot. Only allowed to attach one image per post:

post-33031-1139657658_thumb.jpg

skinned.jpg
skinned.jpg

#358515