I applied in early 2005 and got my letter requesting documents in May 2009. After sent the required documents, the visa office (Singapore) sent me medical forms and asked to pay for the right of permanent residency fees. I did so in October, 2009. Since then i have been waiting for the passport request. But today i received a call from the local high commission asking me to pick up an interview letter. The interview is scheduled at the end of this month. The letter required to bring passports and employment related materials during the interview. Can you share your opinion on this? Also what should i do to prepare myself?