Vb.Net - Stand Alone Application "Completely Invisible"`

Can anybody help?

 

Does anybody know if I can create a Vb.Net - stand alone application that can run "Completely Invisible"?

 

For example, open a drawing document (slddrw) and save it as a Pdf file, then close the drawing document.

 

I have tried using "swApp.EnableBackgroundProcessing = True" but it keeps showing the drawing document.
 

Many thanks in advance!

 

Darren