Ms Access User Accounts

Hey y'all!

Here's hoping someone can help me out. So I'm working with Access 2007, and have just finished creating a program for someone (has tables, macros, forms, e.t.c). Now as many people will be using this little program, I created different user accounts at different levels with respective rights. i.e. admins and regular users, with only the former having rights to making changes.

My problem now is that I have just realized that these user accounts are only relative to my computer, and once I send the files to someone else, they are able to make all the changes they want without ever being prompted for a password.

So if you have experience working with Access, can you tell me how to create accounts that are not only valid on my computer?

Thanks!
S.