[Samba] File Permissions

[AndyLiebman at aol.com]

I have set up Samba so that all users on my small network can read from my 
one of my Linux shares as well as write to that share. 

However, when user A saves a file to that share, user B can't open it -- and 
vice versa. How can I set up samba so that all files written to that share can 
be read, modified, and deleted by all users? 

Thanks in advance for an answer to this question.