I have to update the passwords on our development MOSS 2007 server. I am
going over the KB article and I am stuck on something.
I want to make sure that I am doing this right. There is a section where
you have to determine the application pool account that is used by the
web applications on your server farm. I looked in IIS to verify the
service accounts that are controlling my four web applications. Three
of them are using the same service accounts, but the Records Center is
using a separate web application.

The script that is provided is stsadm -o updateaccountpassword
-userlogin DomainName\Username -password NewPassword -noadmin. I didn't
notice where you tell it which web application you are updating or is it
going to update the web application based on the username that I am
denoting

I hope this make sense.

This is very different from SP 2003!!!