Hi everbody!
Thanks for the replies.
I hope that soon a new version of mIRC allow us to lock this /com commands and this way increase the security of computers with mIRC.
For now I will follow the tip of Online and see what I get if I disable Windows Scripting Host.
I am afraid of indesirable side effects of doing this in my computers...
I already use a great software for Cyber Cafes called SmartLaunch.
Take a look at
http://www.smartlaunch.net/Best regards and happy new year for everbody!!!
/Leandro Peracchi