On 2004-12-10 12:54 +0100, inSicht@gmx.de wrote:
Now I want to change the properties so, that anyone who wants to copy, distribute oder sell my software, has to ask me before.
Legally, you can do it, but you can't call the result the GPL, and such terms also have the potential of causing some major practical difficulties.
See http://www.fsf.org/licenses/gpl-faq.html#ModifyGPL.