E - tds filing

Dear experts,

              I want to know about e - tds filing due dates, actual due date for 1st qtr 15th july 2009 for the FY 2009-10. But we have a news on tds that e - tds can be filed once for whole one year. sir please help me wht is the exact  e - tds due dates for the FY 2009 - 10.

if we filed e-tds after due what will be happn? is there any penalty or interest . sir  pls help me...

Thank you,

PRASAD