AO Update channel.vi

hello,
I am a beginner in Labview. I'm working on a simulation project bipolar transistors for display their current in fonction of voltage .
I look for the "AO channel.vi Update" function in NI measures, but I can not find it. Can you tell me how to set or where I can find it? More, can you tell me how to integrate a ".Zip" package in Labview 2009?
thank you