Do we have a Solution For this

Error::Your PHP server doesn't have the MySQL module loaded or you can't use the mysql_(p)connect functions.

Actually I am trying to develop a website Which has login page,,

-> user should login first, after login i want to show home and other user related options( simile to social or eCommerce websites),

_> problem is i am using Dreamweaver and all is fine but when i try to connect to php database i am unble to make connection,

will any body help with this error Step by step to solve this error