QUOTE(mossycouple @ Jan 24 2008, 06:56 AM)

You really don't have to because it won't be needed during the interview but I think you need that for AOS.
NO! Keep it in a safe place because you do
need it for AOS....our hard copy got lost in the post and took 6 weeks to arrive! During that time I found out what it takes to get another copy from USCIS; filing another petition, possible 6 months wait, and $340...just for a stupid copy of the letter that you have to turn around and send right back to them! I am guarding that stupid thing with my life now!
Yeah, send a copy if you like but it is not needed until AOS in the States.