Check your registry according to the documentation, make sure the firewalls on both ends allow the samba ports on your LAN, your workgroup is the same and that you can smbmount by hand.
mount -t smbfs //10.0.0.100/share /media/share
mount -t cifs //10.0.0.100/share /media/share
If you can mount a share with the IP but not with a name then check your lmhosts.
I'm sure the documentation has even better advice.