MACD strategy, please explain?

I didn’t t get it can anyone explain it to me (step by step)
Dose the time scale has to be set to 4h always and dose the two EMA in order to make profit.

Here's two threads that will probably explain it better then I can.

MACD explanation
http://www.forexfactory.com/showthread.php?t=12133

And a MACD strategy
http://www.forexfactory.com/showthread.php?t=6120

thank you very very much

You can also visit Palmer's blog here http://www.fxtradeblog.com for any additional indicators, information, templates,etc

Dear Fx Traders,
My trading platform MACD'S uses the follwing parameters:

Long (0.0 - 250): 26.0

Short (0.0 - 250): 12.0

Triggers (0.0 - 250): 9.0

Thus: MACD - 26,12,9

Kindly explain the parameters for this setttings and uses of the graphs.

MACD : Moving average convergen divergence

Does anyone have a trade station strategy written for the 4 hour MACD based on Phillip Nel's system ? Specifically for automated trading on trade station
It would be greatly appreciated.