The app is useable, but it doesn't work as it should be. It uses old libs, one of them 'gtkdialog3' I found and forked from pet package.
A few options such as: Tray management, Window focus Model and Application launch buttons in tray I removed due to missing 'xdialog'.
There are two ways to get them back:
1. Find 'xdialog' package (pet or something)
2. Rewrite a few scripts to be working with zenity (or yad) instead of xdialog.
The theme launcher starts, but it doesn't change anything.
I made some improvement due to old tools or libs and directories (puppy users use /root, we don't) used by the applications.
To conclude it is a base if somebody would like to contribute and improve the app.
It is in sparky repo, so install as normal:
apt-get install jwmconfig
If you'd like to contribute, get tar package from sourceforge:http://sourceforge.net/projects/sparkylinux/files/files/dev/