You need to create a samba user
SAMBA is used to connect from Windows to your Linux box
Open up a terminal and type this as root
smbpasswd -a yourusername
(enter password)
Now, when you connect from Windows to LInux, you put in the SAMBA password for the new user you created.
It will get a little more tricky when you dictate what folders to share on your LInux box. For the most part, the below guide will help you, even though it's for Ubuntu. Ignore the 'sudo' stuff since SuSE does not use sudo by default - just use the root account. and ignore 'gedit' if you are using KDE. replace 'gedit' with 'kwrite'
http://ubuntuguide.org/wiki/Dapper#H..._network_users
The other option is to edit the section in your /etc/samba/smb.conf file and make the folder you want to share browseable by everyone without authentication. That way, you don't have to login/password when connecting to your linux box for file sharing. If you want to do that, let us know or follow that Ubuntuguide I linked you to.