***solution found, no need to reply***

Hi guys. I have an urgent problem. I know I’ve posted this elsewhere already, but it’s really urgent.
My friend runs under Windows XP and wants to install Blender. His PC doesn’t allow him to open the .exe, though.
How can he make his pc accept executables?

Thanks in advance!

Peter

EDIT
Solution found!
Thanks go to pixelmass and rocketman!