GlitchFreak
As you are talking about local file sharing, then the issue is that your Windows users are not authenticated against the sme server domain controller user accounts.
As sme is secure, it will ask for a valid username & password that has permission to access the ibay before allowing access.
You need to configure the ibays for guest access.
See this post which has sufficient clues re how to do this.
http://forums.contribs.org/index.php?topic=25227.0When you copy a fragment for a particular ibay you will need to change the "guest ok" parameter to:
guest ok = yes
Change other parameters in the fragment to suit the particular ibayname.