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There should be a folder called newbb. If there is NOT another folder with the same name inside, copy newbb into your site's "modules" folder.
If there IS a folder called newbb inside the newbb folder, just copy the second newbb into your site's modules folder.
If a folder called Frameworks is in the package, copy it to the root folder of your site. So it will now be
Cache
Class
Frameworks
etc.
Also, if you are using XOOPS 2.2, keep the art folder and delete the XOOPS22 folder that are located inside the Frameworks folder.
gestroud