This is a very useful application that allows you to send files through adhoc. Very simple to use. Link for file is http://www.megaupload.com/?d=N5TOO3HK . Instructions are.

Press L or R to scroll though directories on your mem stick.
Triangle brings up the file menu (copy/move,make directory,rename,delete or exit application).
X = send selected files (it then searches for a psp to send it to).
Square = Receive a file.

Make sure your game folder kernel is 3.XX or it will not work

Put in Game Folder


This can also allow you to get rid of unnesecary files and directories without having to get on your computer.....

Couple with the psp unrar and your set to kick ass

There is a particular glitch/bug... your volume wont work properly after you exit.... A simple reboot cures the problem (at least this is what happens with my psp)