Do you mean a newsgroup server Ali As there's thousands of newsgroups. I still use easynews as it has the web interface, about a fiver now for 20 gig, i also have another one that needs a newsgroup reader that gives unlimited downloads for about 40 quid for half a year.
Unless its AOL, Tiscali, Orange, etc etc Usenet users tend to clock up the bandwidth so many ISP's have either removed access to binary newsgroups or don't offer a news server at all.