[Samba] "New Driver" button greyed out on Windows Client Despite having sufficient rights

[Donald Wong]

I'm trying to add/connect to printers through samba, and tried to go 
through the "Add Printer Wizard" by clicking "No" for the "Do you want 
to install the driver now?" Prompt, but now the "New Driver" button 
under "Advanced" tab is greyed out, and there's nothing to choose from 
the printer driver list.

I googled and the only response that I've found so far are about 
insufficient rights, so I checked that I'm within the printer admin 
group but still not able to use the "New Driver" button.  I even try to 
just list myself as the printer admin and still didn't work.  I also 
have sufficient rights to access the print$ share.

Any inputs? Thanks
smb.conf:
[printers]
   comment = All printers
   path = /var/spool/samba
   browseable = no
   guest ok = yes
   public = yes
   read only = yes
   writable = no
   printable = yes
   printer admin = @admin
[print$]
   comment = Printer Driver Download Area
   path = /etc/samba/drivers
   browseable = yes
   guest ok = yes
   read only = yes
   write list = @admin, root
Software:
Red Hat Enterprise Linux 3 AS, kernel 2.4.21-15.0.2.ELsmp
SAMBA 3.0.2 Release 6.3E
CUPS 1.1.17 Release 13.3.6
Printers:
HP LaserJet 2300dtn
HP ColorLaserJet 4550
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