To get gtranslator working you do need much on your system (on debian you can just get'em via apt-get); to get source packages for them, visit http://download.gnome.org; the RPMs can be found via http://www.rpmfind.net or alternatively via RPM PBone Search via this link for gtranslator - it does also resolve deps.

The necessary libs aren't very exotic things, gtranslator is working within a normal GNOME 2.x platform desktop, so that you do just need to install the base libs for the GNOME 2.x platform and gtranslator will run without any major hubs. You can also look at http://www.ximian.com for installing packages of GNOME 2.x on your system/distribution.