Newsposter7.2 is now available for free download. NP creates your
rar and par2 archive files and posts them to the newsgroup of your
choice. Np will remember the last 4 groups you visited and is
available in two versions - nongraphical that runs in a term
window (version 6) and a gui version(7.2) based on zenity menus.
All you do is create your nfo file and NP does all the rest.
Dependencies - newspost (included) and rar/unrar.
Download free from my humble connection at:
http://parkit.dyndns.org 
Linux