How to disable my Dell's touchpad while I type?

Hi there,

I have an Inspiron N5110 laptop. I write a lot. And now I am having an issue with my computer's touchpad. I just trust my skills and type really fast without focusing on the screen, but sometimes when I look at my computer's screen, everything is just messed up. Then I noticed that it is because that during typing, my palm of the hand comes in contact with the touchpad, due to which the blinking cursor changes its postition, and this is the worst thing.

Now what I want is that I want my touchpad be disabled during I type. I tried a few software like Touchfreeze (something like that). But it is because of the manufacturer difference, the software didn't support my touchpad's hardware.

Please help me in this concern. Or suggest a trick or software. Thank You.

Thank you very much "Boohbah"!

I really didn't even bother to notice all of the function keys on my computer's keyboard.

Now the image on the function "Fn + F3" exactly looks like a touchpad having a cross on it. But when I do press the combination of Fn and F3, an orange light glows on the top of my computer's touchpad and it is still not disabled.

Thank you very much!

Installing the latest drive from Dell website actually solved my problem. Now I can also see an icon of touchpad my computer's taskbar. \