teradata database connectivity

Database

teradata database connectivity

I am a new bee working on teradata and the very first dat i worked on it and i had a difficulty connecting to the database.
I have downloaded and installed TD 12 express version.
When i use the dsn tdadmin that is already defined everything works fine.
But when ever i try to create a new dsn with the server ip as that of my local system and select the option local teradata i do not get any session info.
Needed to know what is to be done for creating a new dsn and then create a new database under that dsn. also wanted to know is that really possible in the version(TD 12) provided in the teradata site.

Thanks a lot
Sylvester