Hello guys, i wanna ask u a question: How to change nickname on IRC ?
I type: /NICK MaKs
it wrote nick was changed
but when i connect a channel i am MaKsWeLL77 again.
WTF ?

Connect to all the channels you want first, and then change your nick with the /nick [nickname_here] command.

I assume you're using webchat, so it would be much easier to download an IRC client to do all this for you.

You may use IceChat its simple, good and sexy.