how to set up a amd64 mirror with anonftpsync?

[Mitchell Laks <mlaks@verizon.net>]

Hi,

For doing many off line installs of Debian,  I have set up a mirror for debian 
i386, using the anonftpsync script.

this script -
described on the debian mirror pages 
specifically excludes architectures 
( a newer idea it seems -   now present in the  newer version on the web 
site   )
 
or excludes particular "patterns" that anonftp rsync will exclude.

I set this up a while ago. I never excluded amd64, cause it didn't exist.  

I actually want to get the amd64 version now to try it out.

I understand that  amd64 has been "mainstreamed" since the release of sarge.

However does this mean that  it is already present on standard mirrors like 
ftp.us.debian.org?  

I did a fresh amd64 etch install and it  is using csail.debian.mit.edu.

Is amd64 present at ftp.us.debian.org.  How can I tell?

Do I have to mirror directly from csail.debian.mit.edu? How to do that?

How can I tell if I have already mirrored it from ftp.us.debian.org 
 :) (dumb sounding question i know).

Thanks

MItchell