I moved to NY in the beginning of 2007. I am a freelance designer and I do business with clients in New York and Florida. I receive 1099s from my clients, both in New York and Florida, but i am not sure were do I have to file. Could you please clarify this for me? Thank you.

Well, you do NOT have to file in Florida, as Florida has NO state income tax.

You DO have to file a NY state tax return for the money earned with NY state borders. Since you are located in NY, that's basically ALL of your income.

Have you been making quarterly estimated tax payments to the IRS and NY state?