User authentication form

hi,
i hav created a admin page and user page. i want that user page should be password protected.But the admin should have a right to add user name and password and later through this user name and password login should be possible on user page.
thankz

Off Topic:

Is this related to OP’s problem or this is spam posted reply?

[ot]

OpenDNS reports the site as a phishing site. So spam. Reported.[/ot]