Once you have run the install script (and possibly manually moved the cups.hlp file to /usr/share/cups/drivers/), the driver is ready to be put into Samba's [print$] share (which often maps to /etc/samba/drivers/ and contains a subdirectory tree with WIN40 and W32X86 branches). You do this by running cupsaddsmb (see also man cupsaddsmb for CUPS since release 1.1.16).