I have a startalk flash that I find that mb 202 is an info mailbox How can I change this to a subscriber mb? when I went into feature 983 and dial 1 I'm asked for anouther password which i dont have

Try the default password for the VM. If you don't have it, call in a Nortel tech.

Why are you dialing a 1 ??
That will wipe out your VM.

Just delete the mailbox and create a new one with subscriber instead of Information.