Access Denied For User 'ODBC' @ 'localhost'.. : )

i'm using windows 2000, PHP 4.3, APACHE 2.0 web server and MYSQL 4.1

i've installed MYSQL correctly, but when i tried to type this command -->
c:mysqlshow

then error message come out-->
access denied for user 'ODBC'@'localhost' <'using password: NO'>

so i tried to fix it, and re-enter this command with password -->
c:mysqlshow -p

but again error message come out -->
access denied for user 'ODBC'@'localhost' <'using password: YES'>