OK, had to update this one from version 7.0 recently because some screens (button classes) changed. This has been tested and is from my unattended CD:
CODE
; AutoIt Version: 3.0.102
; Language: English
; Platform: Win9x / NT
; Author: nateklomp
; Script Function: Install Netzero QS 7.4
; May not work with other versions!
Run("setup.exe")
Sleep(2000)
WinWaitActive("NetZero QuickStart 7.0 Setup")
WinActivate("NetZero QuickStart 7.0 Setup")
ControlClick("NetZero QuickStart 7.0 Setup","","Button1")
Sleep(2000)
WinWaitActive("Welcome to NetZero")
WinActivate("Welcome to NetZero")
ControlClick("Welcome to NetZero","","zuibutton5")
WinWaitActive("Confirm Exit")
WinActivate("Confirm Exit")
ControlClick("Confirm Exit","","zuibutton1")
EXIT
I've also attached the compiled EXE, rename NetzeroSetup.exe to setup.exe and run in the same dir (or, better, make an SFX).
Good Luck!