Curtis,
I think at some point it would help to be honest with your Dad about your feelings. But first I think the advice Don gave is best-- try and forgive in your heart. Sometimes just deciding that you will, and then working on it each day is all that it takes.
But I wouldn't approach your Dad until you have worked through all your feelings on the topic, and have thought through how to approach it with him in a respectful and unemotional way. The objective should be to improve your relationship with your Dad, by helping him to understand your feelings.
Even if he initially rejects what you are saying or puts on a defense mechanism (like anger, withdrawal, projection, denial...etc) he will eventually think about it, and it could be the basis of dialouge with him in a productive sense.
And most people will respect someone, who takes a risk to address something that is bothering them, in order to grow a relationship.
When I was younger I had some anger and distance with my father. Just over the past 5 years have we gotten closer. I still haven't addressed every hurt with him (i don't think I ever will either, unless some good can come from it) ... although, now that I am a father.. I sure forgive him a lot more than I did before I had children.
In a way , I wish he was a stronger leader with our family (even now as adults his 7 kids still need advice) , but I really do respect him and know that he did his best for us always. He just is far from perfect... and thats OK... because so am i.
Joe