Do any of you guys know of anyplace to rent a private News server? Or is anyone able to host a modest, private one?

I don't need access to usenet groups, but I want to host my own private news server with nothing but general.discussion for a group of no more than 100 people.. but probably 20 - 25 "regulars".

It would be mostly text based, but prefer to have some binary attachments of 1mb or less.