Script Editing: What program/addons do I need?

[Ulfric1]

I've searched this online but haven't mentions of any specific programs. I've tried using visual studio and notepad++ but it gives me this.

 

Is there an addon I need to view scripts in notepad++ or visual studio?

[Zorkaz]

Pretty sure there's a pex or psc addon.

Also use Champollion to decompile it

[Ulfric1]

Thanks, I didn't know decompiling was necessary.