building rpms and what's up with the panel

[Pedro Corte-Real <lreal riff fe up pt>]

I have 2 problems:

I want to install gnome and e on my laptop. I only have 400 megs of
 disk partition for linux so I don't have the space to have all the
 libs and sources.
I decided to build rpms. So I went inside my glib directory (cvs glib)
and just dig rpm -bb glib.spec. Then I was surprised that he suddently
 wanted the file /usr/src/redhat/SOURCES/glib-1.1.12.tar.gz and said :

Bad source: /usr/src/redhat/SOURCES/glib-1.1.12.tar.gz: 
No such file or directory

I wonder, why the hell does he need a tar.gz. I don't even install from
 tarball's I used cvs.

The same thing happened with gnome-libs.

Second problem:

My panel (from cvs) only shows up in the first desktop (in e). It
 doesn't show up in the other.