Are you familar with Blender and do you have Blender installed?
If not start by going to
http://www.blender.org/ and download Blender for the correct opperating system on your computer. There is a lot of online help for using Blender there as well.
I will try to put together a short tutoral on using maketarget and post it this weekend but if you can't wait, after you have installed Blender, run the target.blend file. Once it loads, position your mouse over the script window to the right and do the keystroke Alt+P, or at the bottom of the scripts window select from the menu <File> and <Run Python Script>.