Greetings engineer983! Welcome to the Windows 7 Application Compatibility forums
Try to launch WMDC manually from Start...Programs and then the splash screen will not appear. WMDC reads 'Connecting' for a few minutes and then reads 'connected'.
On the Other front to give you more details: Windows Mobile Device Center(WMDC) uses the USB interface provided by WinUSB to communicate with Windows CE or Windows Mobile devices over a USB connection. Wceusbsh.sys is not included in Windows Vista.
Microsoft recommends that application developers use the APIs provided by WinUSB for communication with Windows CE or Windows Mobile devices from computers running Windows Vista. The WinUSB interface is provided by WinUSB.dll and WinUSB.sys, which are components of Microsoft Windows Vista.
Hope this helps you.
Regards,
Harish