login not access

I am not good in Englisn But you could help me. when i click winscp my login this message in apper ( Enter password ) i try oftentimes this message apper in display, after apper this message "Authentication log (see session log for details)Server sent disconnect message
type 2 (SSH_DISCONNECT_PROTOCOL_ERROR):
"Too many authentication failures for usuario"

what i doing? my system operation windows xp.

Thanks,

Carlos.

Have you read FAQ?