I do not know why like this happening in my system. Actually when I was using internet explorer7 so at that time I do not have any issue in this. But at the time when I have install the internet explorer so from that I am going through this issue. And the main issue is that how come Windows Internet Explorer 8 will not allow me to modify my Default Search Provider? I am acquainted with this that I am in the right place and I have tried several times but, it will not allow me to modify the search provider? So regarding this if you guys have any suggestion then please help me.