[ubuntu] samba and windows networking

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http://ubuntuforums.org – hi i am new to ubuntu server 12.04. i have been using desktop version. i installed server then installed desktop to get the gui. installed updates and samba, now when i create a folder and share via samba(i am using the samba gui) with appropriate user permissions, cannot browse the share from a windows pc. yet when i share a folder on the pure desktop version using the same samba procedure, it works what am i doing wrong. also whats the difference between samba and gadmin-samba (Hardware)