As the ini set has been disable, tks in advance

You should comment those out, if they've been disabled for security purposes the administrators won't turn them on again. There are some features however that you can turn on for a flat-rate fee.

Just to be clear, ini_set is NOT one of those features that can be bought.

Hey andrew so could i verify with you, the reason for you guys to disable the above is due to security reason? And what is the work around? Or else i can't proceed with the setup

Just comment out the ini_set lines in the sessions.php file it's pertaining to.

If your too lazy to fine the three lines I've already commented them out here: http://pastesite.com/5850
Just replace /libraries/joomla/session/session.php with the paste.

Btw how do i replace the above with the paste cos when i hit on the paste it tab, nothing is working...

Visit the URL Andrew gave you. Select the entire file on that page, starting with <?php in blue, by clicking & dragging. Once you've selected it all, press ctrl+v to copy it. Now open up a new file, press ctrl+v to paste, and save as sessions.php. If it asks you to overwrite, select "yes," and when you upload this new sessions.php file via FTP, select "yes" to overwrite it again.