By editing the Registry, you can make an X-Window-like Mouse Pointer that will get the focus of any window under its "pointing pixel." The following Registry Key must be Merged from a properly formatted *.REG file:
HKEY_CURRENT_USER
\\Control Panel\\Mouse "ActiveWindowTracking"="1"
Secondly, you can "snap" your mouse pointer to the default button when a dialog appears. The following Registry Key must be Merged from a properly formatted *.REG file:
HKEY_CURRENT_USER
\\Control Panel\\Mouse "SnapToDefaultButton"="1"
The current user should log off and log on before these changes take effect. As of this writing, Microsoft has a complete discussion of this topic at:
http://msdn.microsoft.com/
library/periodic/period99/html/ewn9915.htm