I have the codes already prepared in a notepad. I need to know how to know if i can save it there and there for it to work as mq4 mt4.

I wouldn't know because I use an EA called "Forex Autopilot". If you want an indicator script, then I suggest you use this one as it's made me a pretty penny for the 3 months I've been using it.You can see a full review made up of real customer comments here:http://www.fxsystemscompared.com/rev_forex_autopilot.htmlHope this helps?

1. You have to create a new file named my-indicator.mq4 and copy the code there.That's it.2. Then on your PC open a folder with MetaTrader, go to Experts, Indicators. Copy the file with your indicator there.3. Restart MT4.You'll find your indicator among Custom indicators in the platform menu.Good luck!