Well, even if your ISP provided usenet access, it'd probably be limited to text groups only. So first of all, you need to get an account at one of the premium providers which offer access to binary groups such as alt.binaries.starwars, too.
Myriad of them exist, but they all are not free of charge (test accounts do exist, but are very limited). Here's a good point to start: http://usenetcompare.com. Accounts that are unlimited in download volume sell for about 10$ a month.
Now there are two features the providers differ. The first one is the so called retention, which is the maximum time a file is accessible after it's been uploaded and usually is between 2 and 4 years. The second one is speed of course. The given speed is almost always met except when the age of the upload is close to the retention. The content however is the same among all providers.
Once you have an account, go to nzbindex.nl, which is like a usenet search engine. Click on "Groups" on the very top and select alt.binaries.starwars to view this groups content. If you find an upload you want to get, just click on "Download" and a .nzb file will be created.
To finally download it you need a usenet client. I recommend the free version of alt.binz. Enter your account details there, open the .nzb file and start the download.
If you got any further questions just feel free to ask :-)
Oh, and I'd say you get Star Wars - Harmy's Despecialized Edition Remastered, which is just beyond impressive.