hi sdspieg,
VNC Viewer?
Wiki-link :
https://wiki.mobileread.com/wiki/DX(..._Browser_Hacks
I do not have a DXG but from what i can see, on the DX wiki page, everything is already good to go.
Wild guess of mine :
CLIENT
-Jailbreak
-USBNetwork
-Kterm
-VncViewer (point to vnc server)
SERVER
-start vnc server (probably should be started before pointing the client ;-) )