Jack, we've never met as I'm fairly new to the board, but just from reading your post and the posts of everyone else, I would consider it a privalege to know you and your dad.
I do pray every day, and I will admit that a small % is to cover the spread lol, but the majority is for friends, family and others.
I'm a true believer in prayer, and your dad will be in my prayers, along with all the rest of my friends and family that require some help, every day till I hear he's beat this. And believe he will.
God Bless to you and your family, and the card is on it's way.