Conflicting paths for Website module

I used the
Cobalt Module Setup Instructions to set up the Website module. This told me I needed to get the Static Content module as well, and to set the path from $/Cobalt Static Content/Development to D:\data\Cobalt Static Content. Now I need the Document module as well, which also needs Static content, and this has told me to map $/Cobalt Static Content/Development/Static Content to D:\data\Cobalt Static Content. I thought it would be OK to leave the static content module as I already had it, but no, when I try to build the document module I get "The Web site 'D:\data\Cobalt Static Content\Development\StaticContent\site' does not exist". Please tell me how I can get both Website and Document to use the same Static Content module, instead of having to have the whole lot checked out twice!!

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