For downloading multiple binary files, I like XNews, but for browsing and reading newsgroups, I have yet to find anything that compares to MicroPlanet Gravity, once a commercial app, but now open-source and free.
Wow! It's been quite awhile since I tried Gravity. Totally forgot about it. Nice free reader for text groups. For what it's worth I just set it up on Vista64 and it seems to work fine. Also
W7 32 bit no problem I can see so far.