Questions about multiple users and restricting access in OS9.2.1

Hi,

I hope this is posted in the correct place, since there is no obvious OS9 forum

I have a G3 iMac (350MHz, 768Mb RAM) running OS 9.2.1 and three people wanting to use it (including myself). However, I don't want everyone to have access to everyone else's applications and files/folders.

What is the easiest way to set up three user accounts (one as an admin, two as a "user") and restrict the standard "user" accounts to certain folders on the hard disc? By this, I mean that "User 1" won't be able to open "User 2"'s or "Admin"'s folders, but User 1 could open a global folder (which everyone has access to) and their own folder (which user 2 doesn't have access to).

Also, is it possible to restrict applications that each user can open, in a similar way to the folders?

Outlook Express 5.02 is installed on the iMac, and each user has an e-mail account. What is the easiest way to prevent users from seeing each other's e-mails, and accessing the other users' e-mail accounts?

Finally, is it possible to have a login window at startup?


Thanks for your help.

If I haven't been clear enough or you are not sure what I want, please ask

 

Security isn't the highest priority, and the people using the computer aren't all that computer-literate (I'll be the most computer literate person using the computer).

The reason why I've got so much RAM is because RAM was dirt cheap when I got this iMac , and I use Photoshop quite a bit. I'm reluctant to put OSX on the iMac as it only has a 7Gb HD, which is running very low on space as it is - putting OSX on would probably mean I've got almost no HD space left to work with (as I'd also have to install Classic, since I have a lot of Classic apps)