QUOTE(Mononoke28 @ Aug 1 2007, 01:15 PM)

Here is how the NVC works:
DS-3032 generates IV Bill which generates the DS-230
AOS Bill generates I-864
The I-864 has nothing to do with the I-864. Have your wife call the NVC to find out if they have mailed the I-864 already and if so, when.
Diana
Diana is correct about the flow of the documents above. I received the same email you did, I don't think it's standard but I think that is what they will reply in some cases IF you emailed them the Choice of Agent more than once. IE: It's basically a reply you might get if they have already updated your choice of agent - a confirmation that they got your 2nd email as it were.
I hadn't received my I-864 when I received that email either, I did receive it in the mail today. (In other words - don't worry about it)

I believe you are talking about this:
Your inquiry has been received at the National Visa Center (NVC).A packet containing the Immigrant Visa Processing Fee Bill has been sent to
the designated agent or attorney of record. The payment due amount listed on
the fee bill must be paid according to the instructions before the DS-230
will be accepted.
The NVC is waiting for form I-864 (Affidavit of Support) to be completed by
the petitioner. The petitioner must complete a Form I-864, regardless of the
petitioner's income level. Please have the petitioner complete this form and
return it according to the instructions so that we may continue processing
this file.
Please visit
http://travel.state.gov/visa/immigrants/info/info_1335.html to
download a copy of the I-864 and/or the instructions. If you do not have
access to the internet, you may wish to visit your local library or an
internet café.
Regards,
National Visa Center