In my website, I want to list a blank family tree form and a blank list for contact information for the rest of the family to access and add information. How can do I set this up?

You would need something rather more sophisticated than a Bravenet free site. Actually, knowing the discrepancies between what my family members have said, and what came out of the birth, marriage and death certificates I would suggest simply letting them mail you details and you cross check them before uploading. That also avoids the risk of spurious posts.

There are lots of family tree diagramming programs around, check out the geneology websites. Some can get rather unmanagable if you come from a succession of large families.

Use an email form, guest book for forum to let people post.