1.5 meg x 60
That's quite a load for dial-up. What would be better is either getting broadband for about 10 more dollars a month, or utilizing some of the web space allotted with the dial-up account. Usually between 5 and 10 megs. All the church would have to do is upload it once per week. Then let everyone have a link to the site to download it on their own.
Search here and Google for building websites. You wouldn't have to be elaborate with the site if all you wanted to do was post a bulletin. Maybe one of the church members has one set up that they would be willing to host it for the church?
There's no place like 127.0.0.1