Gran, navigate to your plugins folder and find the folder with the SuperBladePro.
Inside the SBP folder you should find a folder called "environments and textures".
I call my plugins folder "Plugins1" and my SuperBladePro folder "SBP", so the
path to my environments folder is:
My PSP8 Files/Plugins1/SBP/SuperBladePro/environments and textures
Yours would be something similar.
You can also go into your plugins folder and do a search for "environments".