UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Create a 'files online' document library?

I'd quite like to add an area where users can upload and download documents / files. Be able to categorise them and view what is available.
Is this possible within UBBThreads?

I dont really want to go down the CMS route if possible as i'd quite like to have it neatly integrated with my existing forums.

Cheers