Timeline for PR visa stamping

[krisashok]

Dear Members,
  I applied for PR on sep 2006 at Newdelhi visa office.I have done my medical on Dec31 2007.I have received PPR letter on feb 2008.Passport submitted on March 14th and still now i havent received any information from CHC. What should I do? Could any members help me regarding PR visa stamping timeline at Newdelhi visa office? May I go personaly to collect the Passport and COPR.I am in lot of confusion and i am so worried. The E CAS shows still "In Process".