thank you rkcRKC said:snail mail is another word for ordinary post.
For PCC , you can go to passport office in Worli ,carry with you original & copies of your photo identity documents like driving license, PAN card , your passport & address proof docs. like ration card , electricity & telephone bills & your photographs. Fill up a PCC form ,attach all copies of documents to it. They'll keep your passport after checking originals , then pay fees of Rs. 300 per person on the next counter. Your passport with attached PCC will be sent back by registered post to your current address.
any one document is enough for id proof as well as address proof right....