How to edit PST with near infinity

[PSTtormentmodderguy]

Here's a good video I found for editing Baldur's Gate with near infinity,

 

 

 

but can't find anything for editing PST (I have the one disc version, not the EE) Does anyone know a resource? I've been doing many searches and haven't found anything. One that gives you a few examples like the above video on how to edit things. For one thing I don't have a characters folder in my game.