When I add a new object (example UV Sphere) I am unable to adjust the parameters for it. (See pic) I click the left and right arrows next to Segment, Rings and Radius and try Shift-clicking like a tutorial said and the values just won’t change. Although I can click ok and get the shape with default settings.

Version 2.49a, Win XP Pro, 1024MB RAM, Intel Dual Core T2330

I think the shortcut is hover over the Numbers to change, and (Alt-Click) to enter you own numbers.
I have no idea why the values dont change when using the arrows.