autofs mounting window share problems

Hi All

Will be grateful if someone can help. I am using autofs to mount shared
directories of a window machines. The problem that I have is that the window
path names consist of space that autofs does not seem to be able to handle
it. Here is a typical entry in the map file

win_share -stype=smfs,rw,nosuid,uid=user,workgroup=workgroup. com,
credentials=/home/user/cdfile ://windowmachine/c/directory with spaces

looking at /var/log/messages file shows that the everything after the first
space is ignored. I have tried various scheme like single, double quotes and
backslash but ot no avail. Would appreciate if someone can help.
Thanks
Ping-Chiek