Display.RGB prob on Java3D Linux-7.0

[praveen@xxxxxxxxxxxxx by gdit.iiit.net (8.9.3/8.8.7) with ESMTP id PAA32714 for <visad-list@xxxxxxxxxxxxx>; Fri, 16 Mar 2001 15:55:59 +0530]

hi,
        Thanx bill and Jack for ur active replies.
        Well I still hav one more at my disposal
        Can any one help me out.
        I am not getting the Display.RGB mapped on 
        the visad application.As a result the data is not 
        being displayed .
        how can I get the data in RGB
yours
Praveen