hi felipeleon!
i don't know if your interest to this topic is already on....
anyway, what you need it uShare.
take a look at this thread:
http://www.vuplus-community.net/board/threads/djmount.1023/
i know... it's in italian language, but you have only to download all .ipk and install them (scroll thread for all .ipk files and don't stop at first group); remember to restart your Vu appliance at the end of installation.
at the end you should have installed uShare (DLNA server) and djmount (DLNA client) and a plugin called UPnP (to control/config DLNA server and client).
and of course, they need fuse module (it is in the list of .ipk files).
let me know if you need help with translation from italian language