Tight VNC \ Vb Problem

Heres the deal. We’re working on this project in work, a 2 screen dual application. One written in Java (irrelevant really) the other in VB.

In the VB application, there is a transparent hole (see through on the form). It displays whatever is behind the VB app. This is working fine, however when I connect into my pc from another using Tight VNC my VB app is completely invisible. To make it even more puzzling, my right click VB menus appear when I right click on the screen, but the actual app is just invisible!

any help would be greatly appreciated…

thanks
Trilla