For a long time I used some kind of blog reader application for blogs and Outlook Express to read newsgroups. Switching between the applications was very annoying each time I wanted to send/receive items.
Then Outlook provided a way to check blogs, and I found another application that incorporated newsgroups into Outlook, that wasn't the perfect solution I needed.
Then I came up on a free RSS Reader and Newsgroup Aggregator called Omea. This application gives you all you need, RSS reader, NNTP news reader and a lot more. Its GUI is great and user friendly, once you use it you wont stop.
Check it out, it's totally FREE! thumbs UP for the JetBrain team, they could have easily charge for it.