can t find folders netwrok drive

I moved my music files to an external network drive before intalling
Vista. If I right click/properties on the music folder it correctly
indicates over 2,000 folders at 54GB. When I view this folder in
Explorer I only see 130 Folders with 7.14 GB. If I copy the entire
folder over, I only get the 130 folders. Another NT machine on the
nework can see all the folders.