USB explain a misunderstanding with WinUSB

Hello,
if I understand the WinUSB docu correct,
http://msdn2.microsoft.com/en-us/aa476426.aspx

"In Windows Vista, the Windows USB (WinUSB) mechanism enables you to manage USB devices with user-mode software" it should be possible to access the USB device only with a client program.

Further in the docu:
"The INF file must also contain an HW.AddReg section..."

HMMMH, what should I do now? I want access my mouse with WinUsb_ControlTransfer to SEND some commands. (Yes, SEND to my mouse with WinUsb_ControlTransfer).

Can I wrote my own INF File, if yes how?
(I have make some test but I get only an error when I try to install this INF I guess th reason is the missing .cat file)
If I must use an INF file from the system, which one?

OR I am completly wrong and WinUSB is only to send commands if I would be the manufacture of the device?

regards
Peter