In the admin section there is a checkbox for terms, check it, then it will show on the registration form. Sorry i dont have my site open right now so i cant give you the exact location but i think its under general settings. 

you can enable it here: www.site.com/admin/settings/user

Thank you very much ross,I am glad and one more question instead of showing terms in another page can i show as a popup....

That would be custom programming mithun. 

Ok then i will take care of this thank you for your valuable time...

Kind Regards
Mithun.y