Art Todesco wrote:

They both use a proprietary control key that must be held while hitting
a number key or a function key.

I don't know if that control sequence exists for my Dell XPS M1730
laptop, but, luckily, I don't need the control sequence because it's all
automatic now that I loaded the (supposedly optional) driver for the
touchpad from Dell.

http://www.dell.com/support/drivers/...duct/xps-m1730

IMHO, it's a MANDATORY download, since the keyboard is essentially
useless with the touchpad in the way, moving the cursor all over the
place in the middle of your sentences.