You can click on Settings in the Keyboard to always make sure the keyboard is on top when you are typing
Step7
You can now click with your mouse all the letters you need to type.
Tips & Warnings
You can replace most USB keyboards without restarting, but many PS2 keyboards will require you to reboot before they work. Especially if they have multifunction keys.
This will not work if you have to login before you can get into Windows.