We have a new project that requires the ability to create and edit documents.  It is for a company portal and we need the ability to have multiple authors (different company departments, i.e., Legal, HR, Marketing) submit documents (of varying formats, i.e.,  word, pdf, xls, ppt) to a central source where an admin will combine those documents into a single document (probably a pdf but not for certain at this point).  We would like to utilize the DNN architecture for the site as a whole (to take advantage of user permissions and other off the shelf modules).  I have seen some of the document management systems by Xepient and Bring2Mind.  These would certainly serve the purpose of a repository (another need) but I have not come across a feasible solution for the requirement outlined above.  Any input would be appreciated.  Thanks.