File share not able to be seen except by creator

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http://askubuntu.com – I have a Samba file share that I can see from a windows machine. The problem is when I create files or folders, only the creator machine can see them. I can create Windows files but cannot see them in Ubuntu. I can create files on Ubuntu but cannot see them in Windows. I am thinking it is some permissions in the smb.conf file but am having issues figuring it out. My main goal is to use this as a media server so the windows boxes, tv and dvd players should be able to connect and see the files without passwords. Also I'd like to upload content from any machine and have it accessible to a (HowTos)