hello dear sir,

I just installed a fresh raspberry pi model B with a zte usb key and i got the following message :
embedded usb-modeswitch is not valid for your architect. You need to recompile for devices to switch properly.
start by issueing ./sakis3g recompile
Thats what i did but it didnt work. it tells me that a library, usb.h and a developpement kit libusb are missing.
What can i do and were can i get that ?