Windows (XP/Vista)
has option to work of mouse from Keyboard in case your mouse is not working.
How ?
Work without Mouse
Press ALT+Shift+Num Lock
After beep you can see this
window and press ok/yes
now make Num lock led off
and you can use arrow key to move mouse pointer anywhere on the screen
as
8 for up
2 for down
4 for left
6 for right
when you want to use left key of mouse then use 5
for right key you can use the key as shown in the picture
Note This Special
The cursor moves very slow but you can speed it up. By
pressing ALT+Shift+Num Lock you will see
a dialogue click on settings
again click settings, and then select Hold down Ctrl to speed up
and Shift slow down. Now when you want to move cursor then hold
Ctrl and then press any key to move the cursor through numeric keypad. It will
speed up now.
Looks Here for the picture for setting mouse key: