How can I recoginize second window

[Guest juliabj]

Hi,

I'm a newer.I want to do an automation install script.I wrote my script like it:

Do

$loop=WinWaitActive("Installer")

If ($loop=1) Then

Sleep(3000)

Send("!n")

Endif

Until $loop=1

After doing it, next window's title'name still is "Installer", How can I recoginze it? and sometimes the button in one window will be enabled after several minutes? How can I do it? I only can use sleep function to wait the button enabled?