John:
Even if you formally established PA as your state of residence, you would still have to file a NY state tax return and a NYC tax return as a part-year residence.
Right now, you have to file PA and NY state income tax returns (NYC is embedded in the NY state form) for both 2005 and 2006. NY state will give you a credit for the PA taxes paid.
You need to give your income and deduction data to an experienced tax pro and allow him/her to run the various scenarios with his/her tax software to determine which is the best way to go.
E-mail me at
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if you have more detailed questions that you do not want to put on this public forum.