Windows 7 will not recognize my 2nd monitor

[d00ch]

I am running Windows 7 Ultimate on a Macbook Pro, and I would like to use the laptop screen as well as my ASUS 23" lcd monitor. When I open the display > screen resolution window, it shows that I have only one display, and gives me no options for multiple displays. The same image is displayed on both screens. My 2nd monitor is hooked up through DVI, and worked just fine with Windows XP. Does anyone know what my problem might be?

 

[Sbrideau]

Bootcamp is the problem here, Windows 7 is too new for it, but this is what I've heard, it's no proof.