@Russ , I found a way thru your guidence!! Thanks a lot!
The whole au3 document was this:
Send("{LWINDOWN}") ; Holds the Windows key down
Send("{p}") ; Presses the p key
Send("{LWINUP}") ; Releases the Windows key
sleep (500)
Send("{UP}") ; Presses Up arrow
Send("{ENTER}") ; Presses Enter
sleep(500)
ShellExecute("C:\Users\nosse\AppData\Local\Programs\Opera GX\launcher.exe")
ShellExecute("https://www.primevideo.com")
ShellExecute("https://www.netflix.com")
sleep (2000)
Send("^{TAB}") ; Presses Shift + Tab
Send("{CTRLDOWN}") ; Holds the CTRL key down
Send("{w}") ; Presses the w key
Send("{CTRLUP}") ; Releases the CTRL key
sleep (300)
Send("{ENTER}") ; Presses Enter
Send("{LWINDOWN}") ; Holds the Windows key down
Send("{SHIFTDOWN}") ; Holds the Left Shift key down
Send("{RIGHT}") ; Presses Right arrow
Send("{SHIFTUP}") ; Releases the Shift key
Send("{LWINUP}") ; Releases the Windows key
With this code I change the screen mode to extend the for my projector, open up a new opera window with netflix and prime video, close the opera's welcome window and finally put this new openned window to the second screen!
Now I'm going to do the reverse engineering! Thanks a lot once again