To drag by using MouseKeys
If you have not already done so, turn on MouseKeys
To turn on MouseKeys, open Accessibility Options, click the Mouse tab, and then select the Use MouseKeys check box.
Use the buttons on the numeric keypad to drag and drop objects. If MouseKeys doesn't function, press NUM LOCK, and then try MouseKeys again.
To move the pointer over the object you want to move or over the area you want to move to, press the arrow keys on your numeric keypad.
To hold down the mouse button, press the INSERT key on your numeric keypad.
To release the mouse button, press the DELETE key on your numeric keypad.
To open Accessibility Options, click Start, click Control Panel, and then click Accessibility Options.
To specify whether NUM LOCK must be on or off for MouseKeys to function, on the Mouse tab, click Settings, and then for Use MouseKeys when NumLock is, click On or Off.
To change the pointer speed and acceleration when using MouseKeys, on the Mouse tab, click Settings, and then move the sliders to adjust the pointer speed and acceleration.
To temporarily increase or decrease the pointer speed, on the Mouse tab, click Settings, and then select the Hold down Ctrl to speed up and Shift to slow down check box.