Hi.. I have made a project in html and i am trying to add data in my html from MS access. One of my friend told me that in back end i can use MS access. But how?

For that, you need to use a server side language.
Php, Asp.net, asp, coldfusion, jsp, choose your poison.

This language will allow you to insert commands that will be evaluated on the server, before sending the html page to the browser (thus the the name "server side language").
This is how you can make a web site interact with a database.

This of course assumes you are on a Microsoft Server. ASP will not work on a UNIX server.

What you can do is convert your Access Database to a MYSQL database and upload it to the server. Then write a PHP front end to access the data.

PHP and MYSQL will work on a UNIX server.

Access files can be used on a linux PHP installation, either via ODBC or via the pecl extension "mdbtools"
http://devzone.zend.com/article/4065

you need to use server side language either php, asp.net or some other I would recommend that you use asp.net download asp.net free version from the web and make a connection through coding to populate your data
try this website for database connection

http://www.connectionstrings.com