Hi Pedro,
Thans for your e-mail.
Perhaps you misunderstood me. 
Morphix is a distro based on Knoppix (which is in turn based on Debian). I have already Debian in my box. It works very well, except gnome. 
And I do not intend to install another distro (morphix etc) in my box just in order to get my gnome run. 
Any help is still highly appreciated.
Setyo
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I installed Gnome Morphix, because is Gnome for Debian ( Gnobian 
http://www.wikipedia.org/wiki/gnobian).
   
 
So, I had not to install Gnome in Debian, because I installed them both 
at the same time ( Gnome Morphix ).
   
 
I suggested a compact installation ( Debian and Gnome at the same time; 
remember that Morphix includes autodetection....).
   
 
Regards.