when the setup file is installed, there's a message error who 's said: "the setup files are corrupted. Please download a new copy of the program." It's the third time that i reinstall and there is this message again. What can i do? please help me.(sorry for english mistakes t's an desperate french who write to you!!!:-))

Did you try to redownload the installation files?
Maybe something went wrong while downloading and now they are... well... corrupted, like the error says. :)

So, it's an virus who's corrupted the setup files during the downloading?

No, it may have been just a bad connection or a bad spot on your harddrive. Not necessarily a virus.

ok it's not resolved my problem but thank you! just one thing, you just make thinking to me that i have a crap's connection, it's maybe that who is corrupted the files. Ok, thank you anyway!! :-s

The main problem with EE III is the game itself.