I never installed it but used the cmd on windows to extract any pbo. then i realized i could make it a bit easier cause i wouldn't need to open anytime the cmd window and move to the right folder.
I created a .bat (using notepad and renaming the txt to bat or saving directly as .bat) file with this inside:
cpbo.exe -e 1.pbo
This extracts any file called 1.pbo to a folder called "1" in the same directory.
So i just have a temporal folder with the cpbo.exe
and i place there any file i want to unpbo and rename it to 1.pbo. Just double click on my .bat and the file is extracted in the same folder inside a new called 1. I used that 1.pbo cause it's easier to rename to just a number :D.
I know it's not the best to pbo/unpbo many files but for simple one works like a charm and i don't need to install/uninstall any program nor being deleting any reg entries on windows nor have another option when doing right click.