Problem with change style

hello everyone
i want change my ribbon style . and i am using this code
( i am using vb6 )

CommandBarsGlobalSettings.Office2007Images = App.Path & "\Styles\Office2007Blue.dll"
            CommandBar.PaintManager.RefreshMetrics
            CommandBar.RecalcLayout


and i am sure the Office2007Blue.dll is already in Styles folder.

but my style dont change . and just staying on blue style
how do i do for change the style

thank u .

i am testing with the Black Style
but it's not change . i am testing with all style . Aqua . Black . Silver . all of

( not change )

then how i can change it ?
i don't remember how i can loading the blue style !

thank you for you'r answer