I need driver for Intex USB Wireless\W150UAP.
You have two options since there is no driver available for downloading:
You can reach support through the following website. Use the drop down menus to select the nearest service center then give them a call: http://www.intex.in/SupportIntex/Index
Use a driver download utility to automatically get the driver for W150UAP device: http://driver-magician.software.informer.com/
Note: For the second solution, make sure that you have a stable Internet connection as the software will download the drivers from online sources.