Tax on PF withdrawl

Hello,

   I joined a company in Apr2005 and left in Sep2007 with my 2.5 yrs of service and after it haven't transferred  my PF account still upto Apr 2010 (5 yrs from opening my PF account). Now i want to withdraw all my PF amount.

   Can an expert please explain which part of this PF amount is taxable i.e. Employer Contribution, Employee Contribution or interest earned.

Or in my case bse i have completed 5 yrs from opening my account i dont need  to pay any taxes and not disclose this income ?

Thanks in Advance !!

-Gaurav