Answer to rze: I'm going to tell you my case, but I'm not a lawyer or an expert, so please ask a real expert, I'm just telling you what I know according to my case. The visa number is the one in red. I didn't have any alien number because I came here with a visa, so if you came here with a visa, I guess (But not sure) you don;t have an alien number (like me). So when they asked me my Alien number, I always filled "none". If you are married, you have to fiil that part with your husband/wife info. If you have kids, you also have to list them, otherwise write "N/A". When they ask about your status, I guess they are asking you your type of visa... J1, G4, HB1, F1, etc... (That's what I did). A# means Alien number. I didn;t fill any I-175, so I cannot help you on that one. Remember, I'm not a lawyer or an expert, so act accordingly.
Answer to Atlanta Borther: I don't know if my money was cashed, since I give them money orders and I don't know how to track them. However, every receipt I received says the amount they received as a prove for me. Anyway, I'm going to ask my bank if there is any way to know if my money orders were already cashed. I sent my paper thru UPS Next Day, and they were delivered on September 8 at 8 AM., and they USCIS receipts say the same (Delivered september 8), so maybe that's the reason a already received my receipts. I tried to check my case online, but I'm not yet on the system. I read on another forum that this is common, so when you receive your receipts, you probably are not going to be in the system for some days.
Keep in touch.