I think that should work actually.
Hannibaler, I think your problem is a missing file concerning the Miles sound system. Check this page for a download of the library file you're missing, it's the first hit on Google for the filename. It should be placed somewhere under your Windows installation apparently.
According to some comments there it might not work with RTW though... Maybe you can find another version that works somewhere on the net, try Google, eMule etc.
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