I've not had much success with applying the solpart menu two times in that format - I know you are supposed to be able to set the levels to render, but you also have to then create a whole new set of classes to get it to view as you want.

The menu on this site uses the http://www.snapsis.com menu - which is a CSS based menu that renders in a nice fashion.  That's bascially a tab style menu and is part of the skincovered goodie bag for november - where I used the bling skin to create a top level and then a sub menu.

If you want to also explore the menu functions look at http://www.inventua.com top menu - and also you could consider using the links or breadcrumbs to create sub menus - since they can also be skinned reasonably well.

Let me know if this was any help for you. - I did see your post - I didn't have enough time to respond since I've been working alot of hours.. its' actually 4am here and I'm just going to catch a few hours sleep!

Nina Meiers