Thank you so much for your help. Moreover, I tried using some templates however whenever I use those, I am not able to open index.php in my browser & it says error, enable register_globals in php.ini or something like that .. This doesn't happen with the original index.php which comes in the zip file of oscommerce
Also, when I open it in dreamweaver, nothing is showing in the design view only some yellow "PHP" boxes are there without any design or anything. How can I modify something if I am not able to view the actual output ? :(
I am little puzzled here and any help would be appreciated as early as possible.