Passwords and login info in OS 9.2?

OS 9.2 on my iBook (sorry, will upgrade to OS X some day soon) obviously
records the username and password data for some of the web sites I log
into, and then automatically fills out the corresponding entry fields
when I come back to these sites later on.

Primary questions are: where is this info located (is it all in
Keychain, or is there some other system utility that gets involved in
this?), and how can I edit the entries?

Secondary question: why does this _not_ happen with a few of the sites
where I have a password-protected account or registration? Their
interface acts similarly to the sites where passwords are remembered by
my Mac, but this doesn't happen for these sites.

Thanks for any education.

 

That's a function of the browser you use since you talked about
websites. I dimly recall IE on MacOS 9.2 did use a Keychain if checked
that box. It asked for the Keychain to open if you did. Otherwise,
it's kept in the IE preferences files in System Folder>Preferences>.
MacOS X keeps such information in keychains if you use Safari.

Again, that's up to the webmaster for the site you talking about and the
browser you're using. If they do authentication in a way that IE
doesn't cope with very well, you'll have to enter your info rather than
IE do it for you.