OK received this letter on Friday 3/14/08. Kids entered on CR2 Visa's 3/1/08. Says Welocme to America ( is this their welcome to america letter )? Now can see the case on line here is what it says, anyone know how long before the GC comes? Thanks
Receipt Number: SRCxxxxxxxxxx

Application Type: OS155A, IMMIGRANT VISA AND ALIEN REGISTRATION

Current Status: Case received and pending.

On March 7, 2008, we received this OS155A IMMIGRANT VISA AND ALIEN REGISTRATION, and mailed you a notice describing how we will process your case. Please follow any instructions on this notice. We will notify you by mail when we make a decision or if we need something from you. If you move while this case is pending, call customer service. We process cases in the order we receive them. You can use our processing dates to estimate when yours will be done. This case is at our TEXAS SERVICE CENTER location. Follow the link below to check processing dates. You can also receive automatic e-mail updates as we process your case. Just follow the link below to register.

Would seem apparent to me it is.