The second confirm window does not show up unless YOU CHANGE YOUR BID.
Chop, I understand that. Let's say there is a poster out there that you are willing to pay $100 for. You make a bid of say $10 early on in the auction just to plant a flag and understand the process. 2 hours before the auction closes, you note that the item is bid at $42, so you bid $44. Most likely the other guy has a proxy higher than that, so the bid is not successful. However, you note how the system works, and about confirmation.
Then when there is 2 minutes left, you open 2 windows. One monitors the auction. The second one, you prepare your snipe bid of $100. With 30 seconds to go you submit and wait for the confirmation message. With 5 seconds to go, you hit confirm.
Please note that you took the time to learn how the system worked and also put out an impression that the item wasn't worth more than $45 to you 2 hours earlier. You now know that you will need to confirm the bid when you snipe, so you can actually perform 2 of the three steps a couple of minutes ahead of time and simply perform one button push a few seconds before the close.
Yes, I realize that you didn't understand the system. However, all the auction sites have their own quirks and if you get messed over because you didn't take the time to learn the system, you really can't blame anyone but yourself. Not trying to get on your case, and I probably annoyed a couple of members by giving such detailed instructions, so please don't bother to flame me.