Giving Notice at Work

I hate giving notice at work. When should I do it? I definately was waiting for a good time. I was going to give 2 weeks notice but then things started happening at work. Meetings were being set and work assignments were being made for 2005. The budgeting process had started and everything included me in it. How could I be sitting here, partially knowing that I'm going to leave when they are still assigning me all this work. I needed to tell them. Ok...I planned to tell them the morning prior to our meeting with our external auditors since me leaving would affect the audit. Sitting at my desk since 7:30am waiting for my boss to get in. She's normally in by 8:15...what's up with the day. She didn't get in till 8:35. So I finally get up and stroll over to talk to her. She was extremely nice about the whole thing. She was concerned about my TN visa issues. She then requested that I go and tell the CFO. What??? Me? I didn't want to tell him. So I walked over to his office but he wasn't in yet. So I finally go in to see him at 9:30. He wasn't very happy about the idea but after I explained why I was leaving, he was very understanding too! I couldn't believe it...I actually thought that he was going to be more upset about the whole thing...thank goodness. It makes my resignation process much easier.