I think better use FEDEX next day delivery.
You need not to wiat for the letter to arrive from NVC. Simply do the FEDEX. FAX# available in NVC site I do not remember at this time.
Here is the letter format. Your attorney has to send this if I-140 was processed through him.
_________________________________________________________________
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April 11, 2002
VIA FAX 603-334-0791
and CERTIFIED U.S. MAIL
National Visa Center
32 Rochester Ave.
Portsmouth, NH 03801-2909
RE: Immigrant Visa of xxxx
INS case#
NVC case#
Dear Sir or Madam:
This is to confirm that Mr. xxxx will be applying for an immigrant visa at the U.S. Consulate in Mumbai, India. Please notify the consulate in order to complete the processing of his visa as soon as possible.
Thank you for your assistance in this matter.
Very truly yours,
Attorney at Law
___________________________________________________