Dual boot setup forces me to Windows

I would still like to use OS X most of the time but if I reboot all it does is go to Windows without asking me anything. Is there a key I should press during the reboot?

Reboot and hold down the option key as soon as you hear the chime (bong!). Hold it until you see a choice of what to boot from on the screen. Choose your Macintosh HD and press enter. As soon as you're in OS X, open System Preferences, Startup Disk, and choose your Macintosh HD as the default. Whenever you wish to boot into Windows, restart and hold down the option key and select the Boot Camp partition. When you leave Windows and reboot, the machine will automatically boot to OS X.

Thank you.

I found that answer elsewhere just now too.