I do not know what you mean by “VorpX Desktop”.
Though, all you need to do is the following:
-Use DGVoodoo2 2.6
-Copy d3drm.dll, d3dimm.dll, dgvoodooCPL.exe and dgvoodoo.conf into the folder with the games exe.
-Run dgvoodooCPL.exe and under DirectX choose 1024MB or 2048MB Ram and if the game does not support high resoultions, use “force resolution”.
– Make a Vorpx Shortcut to the game (click on Vorpx icon->shortcut)
– Start game through shortcut