Oh ok, good.
I don't know if this applies to your model or not, but on most HP/Compaq models, there's also a small button just above the touchpad. This is used to activate or deactivate the touchpad. Handy if you're going to be typing more than a sentence or two. Just give it a press then type away. Press it again when you're done or need to use the mouse. The touchpad usually shuts off and turns back on instantly when you push it, there's not long wait or anything.