I know it comes with some type of readme file...and it explains all the entries, people always asked about the reg hack on this program, but I have never needed to go that far..since most of the functions are on the program itself...at the end I always end up uninstalling due to the approx 5mb of program memory usage and slowing the 67 down.
Just remember to d/l 1.21........ 1.216 is just that a hotfix like a patch follow the instruction ..... and that is it....it is pretty straight forward.
http://mahmood1.com/iphone.aspx <---explains better on what to do
Have Fun