> If somebody have a good idea, suggest me please.
At the web site you can use this:
"You may redistribute Dynamic Draw Professional as long
as as it is not sold and remains freeware.
You should also write a text file inside the program distribution
package where you make these things clear, that it is freeware and that
non-profit distribution is allowed, and that you own the copyright.
Like this:
"You may redistribute Dynamic Draw Professional as long
as as it is not sold and remains freeware.
The name of the program must remain the same and the
copyright remains with the author, Masayuki Fukushiro.
This notice may not be removed from the distribution package"
This will stop people from re-naming the program and pretend that they
are the authors. We know such a person who recently tried to re-name
the Opera web browser and distribute it as his own.