wbload.exe is WindowBlinds from stardock. It is used to take things like Windows styles to a whole new level. More information can be found here.

Quote:

WindowBlinds is a program that that enables Windows users to completely change the look and feel of the Windows user interface.? It does so by natively extending the user interface features of Windows to support enhanced visual styles.

If you have Windows XP, you're already half-way there. Windows XP includes a basic visual style engine that WindowBlinds is able to extend and accelerate to provide more features, optimize its memory usage, and improve its performance.