UUuups, I do not think you would want your Students to upload and hence gain access to your Teacher's home drives, not even by means of going through Moodle. And the Access-Rules on the windows server would in any case prevent such misuse I hope.
So things will stay neatly separated and your question would be if there is a way for the teachers to access their windows home shares by WEBDAV or any other means/protocol to use them in Moodle as repositories.
Interestingliy enogh this is my own question too. But what if a team of teachers work together and should make use of another windows share where they have access through a security group?
Please see here for a further detailed discussion:
http://moodle.org/mod/forum/discuss.php?d=174702
Rosario