If you're not familiar with outboard DMX controllers, or don't want to spend the money for a "universal" controller, it's actually easier to get a USB-to-DMX adapter, and use supplied software (or write your own) to do all your DMX stuff. I've heard these are pretty good systems: http://dmxusb.com/ ...

Use ultra-bright Amber or Red LEDs. most bugs are attracted to bluish light. Some can't even see red light.