database design for multiuser software

Hay tech-republic!

This is pradeep.

I am going start a project, by using VB6 and MsAccess.
This project is for maintain our daily-accounts; dairy; phone book ect.
My project has to save (maintain) data related to more than one people (user).
How I can achieve my goal?
Can I maintain an .MDB (Access database) with fields’ user; password; user-id for each user?
Is there any best alternative for my requirement?

Please suggest best approach for my project.

and, what is the process for insert icons in the menu items, in my
project?