(defun C:RunGeoX  (/ dcapp)
(vl-load-com)
(setq dcapp (vlax-get-or-create-object "DirectCadSvrConnector.DcConApplication"))
(vlax-invoke-method dcapp 'RunDcApp (vlax-get-Acad-Object) 0 21 "")
(vlax-release-object dcapp)
)
RunGeoX