Are you using php login page? is the login details stored in a database?
You need to include sessions to your page so if the user is logged in then he is allowed to access the required page and if not then it will redirect him to the login page.
@saibhaidupareauthorNov 02.2011 — #thanks but actually i didnt want registration page to users i want given access from my side to users for different pages
like i have clients & i want given access to different clients to different page
please provide me script .....i dont having any knowledge of web dev to please pro