hi,
I think the problem is the space between Program and Files in the string 'c:\Program Files\EasyPHP-5.3.9\www\Test\'.
In fact, the real code is :
FILEDIALOG('Choisissez un répertoire!',GNT:DossierSiteWeb, ,FILE:LongName+FILE:KeepDir+FILE:Directory)
run('command.com /c copy SiteWeb\*.*...