we tried to sign up yesterday on IRS as well as social security but sth went wrong and we had to wait 24 hour for new one to fill up...so basically for now we are signing up for IRS and social security ...and then after we get irs transkript and social security earning statement with the AOS i864EZ we will be sending all our supporting documents ..and after the invoice of iv application fees we will fill up DS 260 as written in our paper.. i hope we are not missing anything ...