This could be a challenge...

Incident: United B738 at Calgary on Dec 23rd 2011, flaps failure

By Simon Hradecky, created Wednesday, Jan 4th 2012 22:41Z, last updated Wednesday, Jan 4th 2012 22:41Z

The crew of a United Boeing 737-800, registration N37274 performing flight UA-1288 from Houston,TX (USA) to Calgary,AB (Canada), aborted the approach to Calgary reporting flight control issues and declared emergency. The crew subsequently positioned for another approach to Calgary but needed to go around due to gusting winds. The aircraft positioned for a third approach and landed safely at a higher speed than normal about 50 minutes after aborting the first approach. The Canadian TSB reported quoting maintenance that the crew had not been able to lower the trailing edge flaps to more than 9 degrees, however, had been able to lower the slats into their full position. The aircraft was placarded in Calgary and flown to Houston, where maintenance replaced the right flap position transmitter.

http://flightaware.com/live/flight/UAL1288/history/20111223/1455Z/KIAH/CYYC

You can do it yourself on the simulator, put the alternate flap switch to arm and use up/down switch to extend the flap to your desired value.Slats will move fully out as soon you push the down switch.But, I don't think it will simulate a lot, maybe that the feature in the NGX is purely graphic, I don't think you will have a 9° lift/drag, probably the corresponding to flap 5 or 10.

It's not that big of a deal. Pilots train for that stuff since the private pilots license. No flaps (or partial flaps) means higher speed, that's it.