You want to be able to print to a Windows Server using SAMBA...
To configure CUPS for SAMBA, run the following command:
ln -s `which smbspool` /usr/lib/cups/backend/smb ENTER
The smbspool(1) program is provided with SAMBA starting with SAMBA 2.0.6. Once you have made the link you can configure your printers with one of the following device URIs:
I found this in the CUPS documentation.
You can also use LPD, but that was a much longer explanation...