[vtkusers] update

[Gopalakrishnan, Gowri]

Hi, 


I read data from  bore.vtk -  I use the following 

	vtkPolyDataReader *wellData = vtkPolyDataReader::New();
	wellData -> SetFileName("bore.vtk");

I rendered this and everything is alright. Now I would like to re-render
this every time the file / data is
changed. 
Any of you have any suggestions as to how this could be done?.  Would really
appreciate some ideas/possibilities.

Thanks
Gowri