The dmx module programmer that Scott (SBDJ) from the ACL forum wrote and released is now linked to on the wiki. It sets the start address of the simple 3 channel dmx modules available from holidaycoro, Ray Wu and ebay among the numerous sources. It requires an open dmx FTDI usb dongle and the application can be downloaded from http://www.sbdj.co.uk/dmxmodule/
It's on the wiki at http://auschristmaslighting.com/wiki/Software#LED_DMX_Module_Address_Programmer
It's on the wiki at http://auschristmaslighting.com/wiki/Software#LED_DMX_Module_Address_Programmer