You Don't Need To Download Headers To Use Newsgroups
 

Just use NZB files to get the goodies directly from your isp's servers. These files and search engines for them are all over.

/me googles

programs that can use nzb files

http://www.newzbin.com/ and http://www.leukemail.nl/nzb/ seem to be a link sites.

I rarely use binary newsgroups because you are limited to whatever files happen to currently be in your newsserver.

These nzb links are only going to work for a week or two after being created. They don't appear to contain filehashes so you can't be certain you are getting the original file.