In MOSS 2007, by default the logged user image is not displayed on the aspx pages. In order to display the user image from user profiles in mysite, add the following code in the aspx pages , by editing the pages in sharepoint designer 2007.
In order to increase the picture size, increase the size of the "ResizetoFit " attribute value as per your requirement. Both the length and breadth will increase in the same proportion.
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