Hooah,
I have the same problem with a family member, my brother. Unfortunately, there usually is no compromise or negotiating with these type of people when it comes to their religious faith. It really is not worth strain an already strained relation in order to win an argument.
I have gotten in several arguments with him both about religion and science over the past several years and gradually realized that the best remedy is to stay away from those topics and focus on your similarities. Super religious zealots, like my brother, rarely ever back down, admit their wrong or loose any ground as far as their religious or their Creationist faith.
Sometimes it is better just to try to keep the peace in a family relationship in order to salvage and maintain that relationship and keep it from disolving into the typical Hatfield-McCoy family feud.
Just my thoughts.
Edited by DevilsAdvocate, : No reason given.
One of the saddest lessons of history is this: If we've been bamboozled long enough, we tend to reject any evidence of the bamboozle. We're no longer interested in finding out the truth. The bamboozle has captured us. It is simply too painful to acknowledge -- even to ourselves -- that we've been so credulous. - Carl Sagan, The Fine Art of Baloney Detection
"You can't convince a believer of anything; for their belief is not based on evidence, it's based on a deep seated need to believe." - Carl Sagan
"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." - Carl Sagan, The Demon-Haunted World