Search your pc for MSCOMCTL.Ocx. If you find it then register it by clicking on Windows Start Button ~~> Run and then typing this text and pressing Enter
regsvr32 C:\Windows\System32\MSCOMCTL.OcxI am assuming that the ocx is in C:\Windows\System32
If you don't have that then please download it from here and then repeat the above steps.
Once done, you will now be able to use the control.