You can represent yourself, but you can't have a non-attorney represent you, whether they have power of attorney or otherwise. Now, if you sign the papers, you can have someone deliver them to the court and get them filed - you don't need power of attorney for that. The postal service can do it - it's called the U.S. Mail.
Without more information, it would seem to make more sense for you to hire an attorney to do these things for you.
I would suggest that you give an attorney a call, tell them your situation, and see what they think would be your best course of action.
Best of luck to you,
John J. Keenan
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