what is support identifier/access code for oracle metalink registration?

hi friends, plz tell,
i want to register for metalink.oracle.com web site.
In registration it is asking support identifier/access code.
what is that where can i find it. Our company is having
valid oracle 9i database software already. Is it just license code??
or any other?

thanks

madhu

When you purchase support for your database you will get a CSI number that is what you need set up an account