Hi!
running the pathmysql\bin\mysql.exe -u root
login as root (password is null)!
and use theses command:
use mysql
\g ( \g command running the sql command)
(this command access all ip address to all database)
insert into host values ("%.%.%.%","%","Y","Y","Y","Y","Y","Y","Y","Y","Y","Y")
\g
(create a user)
insert into user values ("%","realusername",password("realpassword"),"Y","Y","Y","Y","Y","Y","Y","Y","Y","Y","Y","Y","Y","Y")
\g
exit the mysql client!
reload the database server!
and USE!
mysql.exe -u root -p
(-p option is password)
Read the MySQL user manual (6.13 section)!