msn search bar wont work with wind 7

sience i installed wind 7 i canot use my msn,searchbar on top of the page. i used to tipe a search where the http adress goes and went to other pages. now it wont show the visited adresses or search from it. i have to go to my home page so i can do a new search using the lower msn search bar to search in the internet. can somebody help me fix this problem? thanks.

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