If you don’t want to use the HTC desire’s driver that come with HTC’s sync software

just install the USB_DRIVER from google’s android SDK

after install the SDK manager

go download the the USB_DRIVER inside the SDK menu, while u can untick those programming SDK, because now u only need the ADB tools and HTC desire USB driver

After u install the driver, go to c:\android-sdk-windows\usb_driver\

open up android_winusb.inf

put this in :-

under the [Google.NTx86] section
;HTC Desire
%SingleAdbInterface% = USB_Install, USB\VID_0BB4&PID_0C87
%CompositeAdbInterface% = USB_Install, USB\VID_0BB4&PID_0C87&MI_01
;

Save the file and then use Device Manager to update the driver – browse to the directory which has this modified file and viola…You should now have An Android Phone with Android Composite ADB Interface drivers, without installing the HTC Sync!!!