You can use tinycore and the samba3 and cups extensions to share a printer for windows machines over a local network and provide the correct printer drivers over the network to the windows machines.
This assumes you already have the printer set up and working locally with cups on the tinycore machine.
As Kingdomcome pointed out, if this is the first time you're using the samba3 extension, you need to create a couple of directories: $ sudo mkdir -p /var/lib/samba
$ sudo mkdir -p /etc/samba/private
You also need to create the samba spooler and set the appropriate permissions: $ sudo mkdir /var/spool/samba
$ sudo chown -R tc:staff /var/spool/samba
$ chmod 0777 /var/spool/samba
$ chmod o+t /var/spool/samba
$ touch /var/spool/samba/placeholder*no doubt the "chmod" commands could be combined...
Create /etc/samba/smb.conf as follows: [global]
	workgroup = WORKGROUP
	netbios name = HOSTNAME
	hosts allow = 192.168.1.
#	security = user
	security = share
	load printers = yes
	printing = cups
	printcap name = cups
[printers]
	comment = All Printers
	path = /var/spool/samba
	browseable = yes
	public = yes
	guest ok = yes
	writable = no
	printable = yes
[print$]
	comment = Printer Drivers
	path = /usr/local/share/cups/drivers
	browseable = yes
	guest ok = no
	read only = yes
	write list = root
For a windows user to be able to print, their username needs to be added to samba's list of known users. I'm not totally sure, but it seems like for this to work, the users also need to be added to tinycore: $ sudo adduser -G staff username
$ sudo smbpasswd -a username*to make things easier, this should be the same username and password as used to logon to the windows machines.
Now start the samba daemons: $ sudo smbd
$ sudo nmbd..note that you can add these to bootlocal.sh to start automatically on boot (as long as the samba extension is loaded on boot and you added the appropriate files to your backup).
The printer should now be visible to the windows machines by entering "\\HOSTNAME" at the windows start/run dialogue.
To make the printer drivers (included in the cups extension) available to the windows machines, change the following in /etc/samba/smb.conf: #	security = user
	security = share
[change to]
	security = user
#	security = share
It also seems that you need to add the root password to the samba password list for this to work: $ sudo smbpasswd -a root
then: $ sudo smbd restart
$ sudo nmbd restart
$ cupsaddsmb -H localhost -U root -a -vnote that "-a" adds all printers, if you want to only add one printer, put the printer name in place of "-a".
Now on the windows machines, after entering \\HOSTNAME, you should be able double-click on the printer icon and have it load the drivers. Once your windows machines have loaded the drivers, change /etc/samba/smb.conf back to the original and re-start the daemons.
To have all of this persist across re-boots, the following need to be added to /opt/filetool.lst: etc/samba/smb.conf
etc/samba/private
var/spool/samba/placeholder
var/lib/samba
etc/shadow
etc/shadow-
etc/passwd
Edit 1: Updated with suggestions from 3rail - thanks