to open a pdf: at first agree to the terms,than it's possible to read the pdf

Hi everybody,

in the moment i have the following problem:

for customers i have created an acrobat pdf-file. so i wish that every user who will open the pdf-file agree to the terms of this document.

f.e: if the pdf-file will open by an user, a message will shown over the pdf-content: "you are not allowed to distribute the content. if you agree, press the "ok" button".

after pressing the ok-button, the full content will shown.

so, i know the password protection, but this isn't my choice, because every user must know the password. the second part is, that it's not possible to show a message over the pdf-content.

is there a solution to do that.

regards hans