If Windows XP not ask for VPower box drivers,do next :
  - remove VPower box from USB
  - start Vsd2xxun.exe and uninstall old drivers
  - connect again VPower box to USB
  - install new drivers
WARNING : Some older softwares after new drivers installing can write:
"Open_USB_Device_By_Device_Description-Device not found"
To fix this problem remove files FTD2XX.dll,VSD2XX.dll and VSD2XX.sys from
folder,where software is.