To resize it to your needs:

1) Find the .lproj file in your Resources folder (eg. English.lproj)
2) Edit your MainMenu.xib
3) Drag the main window size to your desired size
4) The teapot window is the OpenGL view which contains your game. Resize this as appropriate. (Usually to the size of the entire game window)

If your window is smaller than your content and you need to scale it, see drPedro’s post in this article:

http://www.cocos2d-iphone.org/forum/topic/12457

Specifically the setFrameSize calls to scale down the content to fit your window.

No worries, you effectively have to replace all touch methods with mouse equivalents:

- ccTouchesBegan is now ccMouseDown
- self.isTouchEnabled is now self.isMouseEnabled
- check mouse click position using convertEventToGL

If ccMouseDown is not getting called, be sure self.isMouseEnabled is being set to YES.

Sample ccMouseDown:

-(BOOL)ccMouseDown:(NSEvent *)event {
CCLOG(@”Mouse clicked”);

CGPoint clickLocation = [[CCDirector sharedDirector] convertEventToGL:event];
return YES;
}