install service on nt

[Maria Aurora VT de la Vega]

i've been trying to install mysql as service on nt...
mysql is currently working fine without it installed as a service...
mysql is installed in D:\mysql
tried the following in vain...
1. mysqld-nt --basedir=d:\mysql --install --> not valid
2. copy and edit c:\my.cnf and set basedir=d:\mysql\
    and try mysqld-nt --install
    and then net start mysql --> specified file not found error
3. try set basedir=d:\mysql as environment variable
    and try mysqld-nt --install
    and then net start mysql --> specified file not found error

help!

thanks.