I forgot but you would create a new line that looks like the following:
/dev/hda1 /mnt/win vfat defaults,exec,umask=000 0 0

Once the newline is completed, delete the old line entries

/dev/hda1 /mnt/hda1 vfat noauto,users,exec,umask=000,uid=knoppix,gid=knoppi x 0 0
/dev/hda5 /mnt/hda5 vfat noauto,users,exec,umask=000,uid=knoppix,gid=knoppi x 0 0
/dev/hda6 /mnt/hda6 vfat noauto,users,exec,umask=000,uid=knoppix,gid=knoppi x 0 0
Sorry for the confusion,
paul