My display is zoomed and blurry.

[holdmusic]

I would like some help, please.
I have a Macbook Pro 10.4.11.

My little brother played Age of Empires 2 on the computer last night. He's been playing it for a while, but for some reason, the computer decided just now to have a bad reaction.
After he quit the game, the display became ever so slightly zoomed in, so that when I move my mouse to different sides of the screen, the frame shifts about. Also, everything is noticeably blurry.
I have restarted my computer, and clicked around on the display dimensions in System Preferences, but it has changed nothing.

I appreciate you viewing my thread and trying to help me.

 

[ProfDrLuigi]

Press ctrl and scroll with the Mousewheel.

 

[holdmusic]

Press ctrl and scroll with the Mousewheel.

Wow, thanks a lot! That was surprisingly easy. Funny how neither ⌘⌥- nor the zoom wheel on my keyboard worked for that. I'll remember that trick.

 

[ProfDrLuigi]

No Problem.