The title that displays in the browser can only be defined in the EMC header when it's being created. Once the header has already been created, you would need to create a copy of the header and delete the old one.
  1. Select Fundraising > TeamRaiser
  2. Click Event Management Center
  3. Click Manage Headers
  4. Find the header and click Copy
  5. Specify a new Title under TeamRaiser Meta Information