Shifting from pcc to ipcc

Hi,

I am an article assistant at a CA firm, and going to complete my articleship by Feb 2012 end. I would like to ask:

I am currently under PCC Exam pattern and if I wish to change from PCC to IPCC then do I have to give only IPCC exam and need not to do articleship or after passing IPCC I have to join articleship for 3 years again?

If articleship is not to be done after passing out IPCC then after how many months I would be eligible to appear Final Exam?

Regards,

Shraddheya