If you have a problem with changing your name check if the Name_Enabler.dll file in cstrike\addons in your game is deleted and if you don`t have it ,this is because your anti-virus program detects it as a virus and is either blocked or deleted.I have already sent e-mails that the file is detected as "false positive" by most AV software companies.For more information on witch anti-virus programs detect the file click HERE. The solution at this time is to either change your AV program or add the file as "Trusted" so it doesn`t delete it, but this doesn`t work with AVG.Download the file from HERE and put it back in cstrike\addons.To change your name write in the console setname "your name" without the quotation marks! For adding characters to your name from Char map just put the quotation marks.Example : setname "Ʀⱥƶ̸ϵʀ̷"
