passport stamping experience in Sacramento?

[srikrs]

I was approved a few days ago (10-MAY-2004)
http://www.immigrationportal.com/showthread.php?t=125952

I received my approval letter (courtesy copy) from USCIS today.
(13-MAY-2004).

Appreciate any information for passport stamping at
Sacramento? (especially, what time to reach the USCIS office)

Thanks, srikrs