Do I have to file estimated tax payments for 2011?

Hi, after being unemployed for a year (June-09 to June10), I got a 1099 position in the first week of June 2010. Do I need to start making estd tax payments to the IRS every quarter (Sep 15th 2010, Dec15th 2010, Mar 2011 and so on)? OR can I just pay an annual estd tax payment for 2011 by Apr 15th 2011? Please let... show more Hi, after being unemployed for a year (June-09 to June10), I got a 1099 position in the first week of June 2010. Do I need to start making estd tax payments to the IRS every quarter (Sep 15th 2010, Dec15th 2010, Mar 2011 and so on)? OR can I just pay an annual estd tax payment for 2011 by Apr 15th 2011? Please let me know. I missed the June 15th 2010 payment. Is that ok? I had been working for only a week then and I had to focus on work rather than taxes at that point.
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