Are you having problems with the experimental, under development and highly unstable new DMS that is in the /contrib directory of CVS, or with the standard file manager of Moodle?

If the first is the case, then please keep in mind that this extension is only for developer use right now, it's too unstable to do anything with it.

If the second is true, then this is probably the wrong place to post your question. You could try to post in the General developer forum.