Is it possible to disable/enable the predictive interface?

I just started using Mma V9 and its predictive interface. I usually use Ctrl-K for completion.
Is it possible to turn off the “Suggestions Bar” et.al. but still have Ctrl-K avaiable?
BTW, I found “ShowPredictiveInterface” in this community, but this does not come up in the Documentation Center Search.
TIA.
Regards..

Go to the Mathematica>Preferences menu item. On the first tab uncheck “Show suggestions bar after last output”.

Please see this tutorial for more information:

http://support.wolfram.com/kb/11466