I appeared for the interview at US Consulate,Mumbai on 28th April 2011 for B1 visa?

Consular gave me 221 g yellow letter that says my application is under administrative processand once my CEAC No. appears in the list on the consulate website then I have to submit my passport and documents at VFS.Does that mean that after submitting my passport I'll get US visa directly or I'll have to appear for the interview again? Appreciate your help.Thanks.