I am assuming you mean http://desk3d.sourceforge.net/ , yes?
If so I just tried it in Fedora Core 1. Very cool eye candy but it doesn't do anything more useful than impress the natives. It is also quite a resource hog.
I am also assuming that you need (as the webpage states) imlib2-devel and it may also complain about libGL.so.1 (or something).
If you are going to build it yourself as I did you will need the imlib2 and imlib2-devel package.
If you just want to install it from the prebuilt RPM you should only need the imlib2 package (there is a source listed on the bottom of the link I posted).
If it still complains about libGL.so.1 then just try installing it with the nodeps option to RPM. This is a common wierdness due to using Nvidia drivers from Nvidia.
If you don't have full 3D accellerated graphics system none of the above will help.
This http://desk3d.sourceforge.net/README explains everything in detail.
I'm running RH9 KDE and when i downloaded 3d Desktop it says gnome and nvidia in the file name. When I go to install it, it says that I need a couple of certain files. lib something