Password Storage Application...Need Advice.

I am creating an application where multiple users across a network can store passwords to web sites to manage bank accounts, social networking sites, etc... Each user has certain rights determined by the administrator.

Anyhow, everything in the app works good. I am using the active x web browser within the application. The main thing that I want it to do, is when you open a 'link' you created, that the username & password of the login are automatically entered within the web browser. Right now, I have a copy and paste feature (kinda lame).

Is JavaScript needed within my application to do this? What object or where would I begin to achieve this. All I need is a shift in the right direction from the users on this forum. I can learn everything else otherwise.

What's wrong with IE's own autofill feature?

How would I configure that within the web browser? Some sites like facebook & myspace show up with autofill in the browser.