Graphic of Rhel5 in highly configured systems

[md qasim nasimee]

 Hello every body 
i have installed rhel5 in GUI mode in my system (Core 2 Dou ) but Graphic is not commig, Just text is coming so i wanna help me about it.
        also i have installed Realplayer in My Fedora10  but it is not running i cant play any media through it so i wanna solution in this regard.
  
            Netconfig command is not working in my Fedora10 so what should i do?
                 
            THANKS 


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