PSP Registry Parser by Skylark (with minimal help from FreePlay :-P)
This is a command-line program that you can use to view the contents of your SYSTEM.DREG/SYSTEM.IREG files, which are the PSP's system registry. These files contain all sorts of information about system settings, network connection setup, etc.
Installation is simple; just copy all of the files in this ZIP file to a folder somewhere on your computer. It doesn't matter where, so long as you copy all of them.
To set the program up, you'll need to use something like FileAssistant to copy the two files from flash1:/REGISTRY into the same folder as this program. FileAssistant v0.4 works on any PSP up to v2.60, and you can get that from http://psp-news.dcemu.co.uk/fileasistant.shtml
To copy flash1 using that program, press L until "Disk" is highlighted at the bottom, then press R, then pick Flash 1, then press O. Then Press L until "Copy" is highlighted, then press  to highlight the SYSTEM.DREG and SYSTEM.IREG files, then press R to copy them to the MS.
There are two main ways of running the program:
1. Display-only mode. Open up a command prompt, change over to the folder that has the programs in it, and just type "parsedreg". It should spit out an XML-formatted file to the console.
2. File output mode. Performed exactly as #1, but you instead type "parsedreg > insert_a_filename_here.xm l". It'll save the file to whatever name you put into 'insert_a_filename_here'.
There's not really much to do with this yet, but we obsessed over it for a few days on Fanjita's IRC channel :)
If you have any questions about this, I'm sure one of us will be online. Go to www.fanjita.org
and click "Live Chat", or use your favorite IRC client to connect to irc.toc2rta.com , channel #fanjita. You can also e-mail FreePlay at FreePlayPSP@gmail.com
. He's a bit addicted to the IRC channel :P
There's something in the "pspreghtmlizer" folder that can turn the XML output into a nicely-formatted web page. Check it out.
The "src" folder contains the source code, for those of you on who are on Linux or who just want to modify the program.