File without extension

hi to all again ^^

I wanted to know how to make a file without extension ?

cause my BlackUser folder always Appear when i remove it...

thanks !

go to ur explorer folder options on the 2nd tab
look for sumthing like: hide unknown files extensions and unmark it
then u create a notepad file and save as BlackUser, go to the folder, rename and delete the extension

et si ta bien suivi ce qui est audessus tu dois encore faire apr

correction:
right click, properties, Read Only

=P