The person in
this link says to install the smbfs package.
Some further use of google led me
here and
here.
Can you try T3RM1NVT0R's suggestion first?
Code:
sudo mount.cifs //server/share /mount/point -o username=user,password=pass
If that doesn't work, install cifs-utils, if it's not already installed, and try again with both your and T3RM1NVT0R's syntax.
If that still doesn't work, you can install smbfs and retry mounting, again with both syntaxes.
I haven't used samba a whole lot, so I'm not too sure if this makes a lot of sense, but these are the steps I would take.