Thank you for the comments and advice received. However the problem is still "how do I show spouses, children, parents" with no date of birth. I understand that guessing is the easy way out, but when you are trying to guess a living persons age, one that you did not contact yourself, it is dangerous and may lead to the error being compounded over the years.
This problem is also very real when trying to capture those family members who 'intermarry', cousins to cousins, uncles to aunts etc.
Ever since I started genealogy more than 40 years ago, I was always told 'if you are unsure of a date, put it in the comments, but do not enter it as a given.' Especially when you are working on a public forum where people will take your information and use it as 'gospel.'
Again thanks to all.
Regards to all,