You can prevent the Ease of Access On-Screen Keyboard from automatically
> starting when you load Windows by clearing the "Use On-Screen Keyboard"
> checkbox on the "Use the computer without a mouse or keyboard" page in the
> Ease of Access Center. (Open the Control Panel, click Ease of Access, click
> Ease of Access Center, and then click Use the computer without a mouse or
> keyboard.)
Cheers.
Mick Murphy - Microsoft Partner