[vtkusers] urgent

[Dharmendra]

Hello All,
When i try to load vtkRenderingPythonTkWidgets.dll
it throws some strangs error
interp.call('load ,filename)
no such process error.
Iam unable to execute the following peice of code.
import vtkRenderWidget
import vtkTkRenderWidget
import Tkinter
root = Tkinter.Tk()
ren_widget = vtkRenderWidget.vtkTkRenderWidget(root)
at this it gives that error
thanks in advance
dharmendra