vista - samba - sonicwall global VPN problem remote printing

Can anyone help re following:

I am trying to print to a shared Vista printer using samba's smbclient over
a VPN using Sonicwall
Global VPN client and each attempt results in the following error:

session setup failed: NT_STATUS_OK

If I use the smbclient -L option, I get following:

# smbclient -L \\ralph-pc
Password:
Anonymous login successful
Domain=[LTL] OS=[Windows Vista (TM) Business 6000] Server=[Windows
Vista (TM) Business 6.0]

Sharename Type Comment
--------- ---- -------
Error returning browse list: NT_STATUS_ACCESS_DENIED
Anonymous login successful
Domain=[LTL] OS=[Windows Vista (TM) Business 6000]
Server=[Windows Vista (TM) Business 6.0]

Server Comment
--------- -------
RALPH-PC

Workgroup Master
--------- -------
LTL

I have no problem accessing samba shares from Vista.