TuneBoy is the only software that actually reprograms the ECU to a different Air/Fuel/Ignition map. Power commander and the like sit in front of the ECU and trick it into doing what they want by providing it with false information. The Triumph tool will only push premade tunes supplied by Triumph.
So if you want to actually tune your ECU, you need TuneBoy/TuneEdit.
It works on windows based computers and requires a serial port. I bought an old laptop and installed XP. Cost me about 300 bucks for the Laptop and Software. I also use it to suft the internet in my shop whaen working on projects.
If you have a laptop without a serial port, you can buy a USB to Serial converter that will let you use any PC/Lapto with a USB port. There is information about this and many other questions at this forum:
http://www.t595.net
I reccomend using a laptop as you can leave it connected and do DYno runs on the open run while logging data in real time. Helps you to quickly build an Air fuel map.
Ed