samba errors

[Sam !]

in my /opt/samba/lib/smb.conf:
[global]
[tab]workgroup = abc
[tab]null passwords yes
[tab]encrypt passwords = no

[abc]
[tab]path = /export/pictures
[tab]writeable = yes
hosts allow = abcpc1

1)from pcwin3.11 i try to map solaris 2.7(samba-2.0.7),
\\sol2.7\pictures, i get "invalid password" after enterring
password at pcwin3.11's network password prompt.
2)with only \\sol2.7 i get "The server is not configured to
list shared resources".
3)when i typed "http://localhost:901" ot "http://sol2.7:901",
i got the error: " Netscape is not able to locate localhost:901.
The server does not have DNS server". In this little lan there is
a PCwin3.11 and another solaris 2.5. That is all.

How can i add passwd to samba's passwd file?. i see /opt/samba/bin/smbpasswd 
file but that is a binary file. There
is no mksmbpasswd file anywhere on the system.

sAm
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