How to operate the computer without External Keyboard

We use computers for many purposes example: business,institutions,work,or for home usage etc..The devices such as keyboard and mouse are the main input devices used by us.Think that if your keyboard doesn't work when you are working in computer.There may arose many problems and it will spoil your mood. you can use internal keyboard to overcome this problem. This facility available in windows xp and windows7.Now see how it is done:
         *Go to->start menu->and select "run"
         *Then type "osk" and press ok.Thats..it..
Now your internal keyboard will open,now you can operate this keyboard using mouse.