Have you looked at »
www.lightleap.net/ ? Looks like they cover the Morganton area. Not very fast speeds but definitely better than dialup. I don't know anything about them.
On my U.S. Cellular connection I just ran some tests and put them at the bottom of the post for you.
If you want me to do any more tests let me know and I'll be glad to do so. My wife plays World of Warcraft with no latency issues or anything.