AD migration and Sharepoint

Hey everyone,

We are going to migrate our domain users to our parent company domain, I have about 200 users to move. Is there a way to migrate everyone with a script using the sharepoint tool and keep their permissions.

I seen  the command User Syntax: stsadm -o migrateuser -oldlogin <domain\name> -newlogin <domain\name> -ignoresidhistory.

I have 3 questions.

1. Can i do maybe a list with this command, if so how?

2. If i cannot do multiple users, if i get started now, before we migrate will the user still be able to use their old account until we migrate.

3. Would the account need to be enabled to accomplish this? (We used the Quest tool to migrate the users, but their account is not enabled yet)

Chad