External monitor doesn't fully work with laptop

[cricket2067]

I'm on XP and I tried to connect an external monitor to my laptop. But even when I try to set it to second monitor in screen options, it only functions as a secondary monitor. Meaning you can't run the full screen, with the entire windows screen with icons and the start bar, but only side apps like games etc. I tried all the options, dual screen, secondary screen and it obviously recognizes the secondary monitor but it just doesn't want to run the full desktop.

If anyone can help, it would be appreciated!
Thanks!

 

[cricket2067]

Thanks for your reply!

The option that you are talking about is blank, I can't click it. Even though the external monitor is recognized, basically all you can do is click and drag apps to it from the laptop monitor.