There are many ways to install a rain chain onto your gutter; below are three ways that we have tried. If you would like to have a chain that is mostly used for decorative purposes you can try method 1 or method 2. If you would like to replace your down pipe, you can give method 3 a go, but be warned that rain chains may not work as well as a normal down pipe under heavy loads of water (i.e. during storms). If you're concerned about the effect installing a rain chain will have on your gutter and drainage system, we suggest contacting a licensed plumber. You should also consult your local building regulations and codes.
Only try the following if you feel confident working on your roof, otherwise a handy man or plumber should be able to help with any of the methods.