Can I file for contempt of court against my sons father to force him to comply with our custody order and visitation obligation?

Yes of course you can. Sadly though if he wants to be absent father there is not much that can be done.

The judge is the judge and they can do whatever they want to do. Basically the Judge is telling your gf she is going to sit for a while. Speak to...

Are there any local attorney's who specialize in children's rights? If so, can you please tell me their names?

We are not allowed to do that on this site. You have to make the choice as to who can best help your children.

What are the rules on getting a misdemeanor expunged in PA?

Yes they can be expunged off of your record.

They may speak to the probation officer.

How Am I able to beat this without hiring a attorney, I really need my license for my job and I don't want to pay for a lawyer ?

In Pa that would still be DUI so you should not have said anything. Anyway since you don't want to hire an attorney, apply for the public defender.

If blood tubes were labeled with the wrong name, could his case be dismissed?

Maybe it would depend on the facts of the case but it does sound promising.

Can the police legally just take things out of a person's home without taking note of whatt they've taken?

Sure you can. Hold on though. If it is a cell phone or something like that which may be evidence of a crime or possible crime then you may be...

Is it possible to get your record expunged immediately after ARD probation, or to get off ARD probation early?

I don't see why not. Speak to you attorney who handled the case for you.

Do I have the right to sue

You may be able to sue up to one year from the transaction. It depends on what the estimate would be to repair to see if suit is worth it.