Ok, whatever you do in this situation, you need to remain calm. Judges, child support enforcement workers, and court workers can and WILL help you and will be ON YOUR SIDE since you are the one with PHYSICAL CUSTODY OF THE CHILD if you STAY CALLM and do not get EMOTIONAL and irrational. This is a process that is new and scary to you, but trust me, these people go through it a thousand times a week, and NOTHING your ex can say or do will be new to them. That is something to feel confident about, they have heard his BS before. (no new tricks)
You don't need to "dress up"for court, just dress nicely, like I assume you would if you were going to a job interview or a classy lunch. If you wear some really expensive dress and way over do it, it actually could work against you. I had a friend borrow an expensive designer dress for court, and the judge happened to be female and she noticed the dress and mentioned it and asked her how she could afford that when she claimed to have such a little income and needed child support. She assumed that she was hiding income since her reported income was low, and that was what her ex was accusing her of. I say go with something nice, but not over the top dressy. Be yourself! Also, do NOT bring your child! The courtroom is not a place for kids. Period. If they need the child for any reason, they will let you know. If you go before the judge, you will not be the only case heard that day, and will have to wait your turn. Your child may be fussy having to wait with all of those other people going up before you. It can take a while.
I assume that your financial formshave all been filled out? Did you know that you can go to the court clerks office and get a copy of your ex's too? They will give you a copy of his for a small fee, like a dollar a page. You can do it before or after your case is heard. This way, you can check to make sure he has reported his income correctly. (if you know what that is) Also, it will give you his address, etc. The child support will be a seperate issue from any visitation. If I were you, I would not allow any visitation with a man who has not seen me throughout the pregnancy or has not seen the baby at all, unless that visitation is SUPERVISED. I would ask the court (when the time comes) to appoint a guardian ad litem, which is someone to speak and act for the child. They will go to both homes and speak to BOTH parents and asses the situation and report to the judge what they believe would be the best and safest situation for the child. If he has no experience with kids at all, or has any history of being aggresive or has a record or any kind, the judge may order him to take parenting classes or something before he would be allowed to have any unsupervised visits. You never mentioned why you broke up, or if he was ever violont or verbally abusive, so I am going to assume he wasn't and just really didn't want a child after 2 years. He sounds like a child himself really. (most of them are for a lot longer than the women) He may not even ask for or want visitation for now, if ever. If I were you I would just be prepared for it though, so you are not shocked, and understand that the judge will NOT address that issue at the same time that he does the child support. Remember this too, just because you and this guy were not able to work things out doesn't mean that someday in the future your child may want to know or have some type of relationship with him. He is the father. (if and only IF he is a healthy and safe person)
I wish you the best. You did nothing wrong. Court can be scary for someone who has never been there, and you need to not be intimidated by it all. You were BOTH there when your child was conceived, and I am sure that you don't regret it at all now, since you have a beautiful child to love and watch grow as a result. He has to deal with the consequences of his actions way back when, as you have been all along. Child support is NOT about him paying YOU and YOU getting his money. It is about what the CHILD is entitled to, and what the CHILD deserves. Every CHILD deserves to be able to eat, have clothes to wear, a roof over their head, a way to get around to the places that they need to go, toys to play with, medical insurace, and to feel safe. This is about your child. HIs child. If he can't see that, well than he himself is still a child and you should be very happy that you are not still with the guy because you would be raising TWO kids not one. Good luck! :)