apache2 windows DocRoot point to network drive?

I have a windows box with a samba mounted drive on S: ... would like
windows-based apache2 installation on this box to go to htdocs on that
S: mount. But get syntax errors starting apache with httpd.conf
DocumentRoot, etc, pointing to the S: drive. Tried config'ing windows
to start apache service under my username, which has the S: auto-mount,
but that doesn't work. Can I somehow use a directive like this to
mount?

//machinename/royce/website/htdocs
or
S:/website/htdocs

Thanks,
Royce