Ms. Nolin,
It's been a while since I was there, and I'm not sure where in Hendersonville you will be, but here's what I recall.
I came from Spartanburg Co. SC by taking I-26 toward Hendersonville. I exited at 49b and took 64 toward Chimney Rock. I don't recall how far it was, but the road divided (you cannot see the oncoming traffic side for a bit), and at the next redlight, I believe, was Howard Gap Road. Take a left onto Howard Gap, and you'll pass one church on your left that actually looks older than Ebenezer, but continue on through the next redlight, and you'll run into Ebenezer Church on the left. The cemetery is found on both sides of the road but the Corns are mostly in the lot right next to the Church, about midways back, if I remember correctly. The flag was still there, next to John Peter's when I was there.
Here is a link to a map that probably shows it better than I can explain, and if the link doesn't work, let me know and I'll email it to you privately. Have a safe trip!
http://www.mapquest.com/maps/map.adp?email=1&mapdatLee