What should I do to legalize my husband ?

Presumably you're asking about immigration, not divorce. But if you are asking about divorce, there is no application involved and you would do...

My ex wife and I want to write up a legally binding agreement in regards to taxes. Can it be done without a lawyer?

That depends upon what it is you want to write and why. Just file taxes if that's all you need to do - and only one of you takes the deduction.

Are there people that fill out divorce papers for the plaintiff ?

Yes. They're called lawyers. Others are simply pretending.

Do you know any affordable attorneys in Nassau county that can help with a divorce ?

Use the "Find a lawyer" tab above and make some calls.

If i file for divorce and full custody of my children do I need to stay New York

Not necessarily - but if it's uncontested that should have been worked out. As to free assistance, you can see if there's help available through...

Westchester is running very quickly right now if you e-file.

Paying for attorney fees

If you're the spouse with all the money - yes. I know it seems unfair...

Unfortunately it's quite common - and your attorney is correct. The courts are badly backed up. It's a function of budgets that are too low...

Of course. But you saying she's lying is insufficient to demonstrate that she is, in fact, lying - that requires proof presented in the form of...

Ex will not sign the divorce papers

It's not uncontested if there's a refusal to sign papers. You have to file as a contested case...and you can seek to enforce any agreement.