Gary, in reference to your quesions:
>>So, what if the joint custody other parent says, no you can not go. <<
Then you have to get a judge's okay to do so. When parents divorce, many times they put the kids in the middle. I have full custody of my kids, but due to visitation arrangements, if I were to take a cruise that my ex-wife (yes, I'm a dad who fought and won custody of his kids, who she left when they were 9 months and 3 years old, and they have never left my house) didn't approve of because it ran into one of her visitation days, I'd have to get my lawyer to have a judge sign an order that it was okay to do so. My kids are now 12 and 8, and there are many times that she has put the kids in the middle because she realized her mistake and can't accept that she put herself in the position in life that she's in now. Sad.
>>Or, what if you do not know who the father is, where he is, dead or alive? <<
I'd once again suggest a letter from a judge (I'd suggest that you don't get pregnant by someone you don't know, but thats a little late if you're in this situation.......LOL).
I'll pass on clicking on this link before it turns into a "Well, MY ex did this and that" stuff.