It is easy enough to do.
1) Download a newsgroup reader program
2) Put your ISPs news server in the address (or put in the adrress of your subscription news server)
3) Add the newsgroup (alt.binaries.starwars or whatever)
4) Tell it to get the current list of files.
If the files show up as complete you just tick them to download them. Because they are hosted on your ISP you get the full speed of your internet connection for the download.
Give it a try! You never know your ISPs newsgroup service might do the job, and it is free!