How to implement Http basic authentication

I created a Http direct acceptor with access control marked as HTTP Basic Authentication.When I type the url for that acceptor it duly presents me with user name password dialog box.So far so good.But it accepts nothing other than "Administrator" as username & "Administrator" as password.I want some other username/password.

So I go to SMC. Configuration tab. Right click on Configured Objects.Select New.Presents me with "Create Configuration" dialog box.Select Sonic Security > Authentication Domain. Create a domain by name "MyDomain".In that domain create user subhendu with password mahanta.Create Group MyGroup. Add "Administrator" & "subhendu" to it.

Still the new user/password is not working.

What I am missing?

Pl. help.

Regards,

Subhendu