To add your history information to iGoogle, you will have to first log into your account or create a new account. If you’re starting a

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new account, you will be given an option to enable your Web History. If you already have an account, you will have to sign into your account, and then go to
http://www.google.com/history/. Once you have set it up, you will see a list of all your past searches, listed running down the page with the latest search first.
You can also access your Web History from the Google Accounts page simply by going to https://www.google.com/accounts/ManageAccount if you are already signed in. The Web History link will be in the first column on the left.
You can, also, directly access your Web History by clicking on the link for it on your iGoogle page directly.