QUOTE(hahuhobrad @ May 31 2006, 04:35 AM)

This just seems like a silly question, but I cannot find or figure out the answer.

What is the A - Number. It sais provide the Receipt Number and A - number on envelope when submitting I-129F.
Application #? I looked online, on my NOA1. I can't find it.
The A # is Alien Registration number. Sometimes they put it on the NOA's but often they dont. So check your NOA1 for an A followed by a series of 8 or 9 numbers. If its not on there dont worry about it. You will be assigned a few A #'s during this process and another on entry to the US once you have your visa.