Can i be cited for parental alienation?

What you are describing is not parental alienation. You should certify the TX order here in Florida. You should hire a lawyer to represent you in...

Is there a specific motion I can use?

File a motion to reconcile the support arrears and for credit against support arrears. You should hire a lawyer to represent you in the case.

How can I make changes with child support, when my ex girlfriend was the one that filed for it?

You can enter into a written stipulation with her, or file to re-open the case with the court. You should hire a lawyer to represent you in the case.

Can I ask the judge?

Yes. Make sure all parties and the court are aware you intend to bring it up at the hearing. You should hire a lawyer to represent you in the case.

Yes you can file for divorce in the USA. You should hire a lawyer to represent you in the case.

Can I take my daughter across state lines without her father's permission?

If no married to him and no orders in place then yes you can move. You should hire a lawyer to represent you in the case.

Do I have to give these documents and how long do I have to before I turn them in if I have to?

Yes you have to comply within 30 days. You should hire a lawyer to represent you in the case.

What can I and the school do so he can't pick him up from school until further court order?

Get an order from the judge. You should hire a lawyer to represent you in the case.

Can I ask dad for these things?

Yes. Make the appropriate discovery request. You should hire a lawyer to represent you in the case.

Can I get sole custody of my daughters

If there is sexual violence involved then yes your chances are excellent. You should hire a lawyer to represent you in the case.