Thank you for helping.

I use suse 9.0, if that's what you meant with package.

Yes, glib-config and gtk-config are in /opt/gnome/bin

Now I have pkg-config installed and yast put it in /usr/bin

The installation instructions to gtk+ said to install it where GLib, Pango and Atk are, wich is in /opt/gnome(/include?).

Should I install both gtk+ and gnutella in /opt/gnome then or move things around/reinstall Glib etc? If I intstall everything in ...gnome, then I will not have pkg-config in my path?