Connection Pb - ODBC with ADO/VB

[xkite]

Hi,

I'm starting with MySQL (and PHP).

My configuration is :
WIN XP
MySQL Server version 4.1.10-nt-max via TCP/IP
MySQL Client version 5.0.0

I wish to use ADO to connect to my database.
I'm using the connect string below :
"Driver={MySQL ODBC 3.51 Driver};Server=localhost;Port=3306;Option=3;Database=ma_base;Uid=mon_user;Pwd=mon_pwd;"

Whatever are the different connect string (with DNS or not ...), the result is always the same :
Execution Error '-2147467259 (80004005)' :
[MySQL][ODBC 3.51 Driver] Can't connect to MySQL server on 'localhost'(1002)

Nevertheless :
# I connect without problem through :
- MySQL Administrator
- MySQL Query Browser
- CommandLine Client

# When i execute SHOW GRANT FOR 'user'@'localhost'; the result is :
Grant Select, Insert, Update, Delete ON *.* TO 'my_user'@'localhost' IDENTIFIED BY 'my_pwd'

# I have created a DSN ODBC who seems to work correctly :
Param\Conf Panels\Admin Tools\Data Source (ODBC)\Onglet System ou
User
Name : MyODBC-user
Driver : MySQL ODBC 3.50 Driver
Server : localhost
User : my_user
Pwd : my_pwd
DB : my_base
Port 3306
If i push button "test" i get "Success; Connection was made"

I don't knwo what to do more :(

P.S : As i'm working for now with 'localhost', maybe i would better used Named Pipes ? If yes ... how ?

Thanks for your answers