The Framework and Application Help About Logos can be changed to any Framework enrolled bitmap. See How do I enroll my own bitmaps and icons?
To change the Help About Logo for the Framework, choose the Framework menu, and the Properties… option. Go to the Help About tab sheet. A very small version of your enrolled image should be visible in the Bitmaps group box at the bottom of the tab sheet. Select it.
To change the Help About Logo for an application, double-click on the application's icon and go to the Help About tab sheet. A very small version of your enrolled image should be visible in the "Bitmaps" group box at the bottom of the tab sheet. Select it.