Create a file utility

I would like to create a file utilities for a popular psp game. A file opener with a Windows Explorer Like Interface with the following capabilities: Browse with a collapsible tree like view Search, repack, extract And another utility to edit the script/events With a preview pane Search all the files for a particular thing (text / word) Legal/Disclaimer: This is for personal use only and no copyright infringement intended. I will expect the full source of the programs.