Changing Permissions of Samba Mounted Volumes?

[Mike Loiterman]

How can I change ownership or write permissions of a mounted samba volume.
The idea is to use a folder located on one of my windows machines as the
default download directory, but the user that will be downloading the songs
does not have permission to write to the mounted samba volume.  I have done
a chmod 775 on the mounted volume but nothing happens.  Am I missing
something?