To mount a share from a Windows box, you need the Samba client software installed. Then, you mount as...
mount -t smbfs //server_name/share /mount/point
It will work with any 9x/NT/XP share, since the disk read / writes are handled by the Windows box. Once you have it working, you can add a line in your /etc/fstab with options to allow users to mount / umount.
To see what shares might be available on a Windows box, you would use the smbclient command...
smbclient -L server_name
It might give you different shares depending on what account you use, and what permissions that account has on the Windows box.
To share from a Linux box to a Windows box, you need the Samba server, and have it configured to match the Windows network.