You can change the font size in FIMS using the following steps.
  1. Go to Tools > User Preferences > All Other Preferences
  2. Choose the Font_Size option
  3. Select the value that you want for the font (small, medium, or large)
  4. Click Apply and OK
  5. Restart FIMS
This video (https://www.youtube.com/watch?v=Ii4sY2NjZwM) will also walk you through making this change.