Cool. We've all been there. remember to configure your firewall and turn it back on again, when you're done :)...
Now, is this a public share? If so, you just put:
public = yes
under the sharename in your smb.conf file. You may need:
guest ok = Yes
too (I haven't run any public shares for a bit).
Have a read of this, too:
http://www.toad-one.org/howto/Samba/...eshooting.html
HTH
Dan