Unfortunate. In that case, you will have to use the Microsoft ComboBox control. In CVI 6.0, just go to your panel in the UIR editor and right-click and select ActiveX. From the list, pick Microsoft Forms ComboBox Control. That will add a combobox to your UIR. Then you can generate a wrapper driver for that control by right-clicking it and selecting, Generate ActiveX Control Driver. From there, use Microsoft's help for the control, built into the function panels for help in using the control. For more help on programming with ActiveX controls in CVI, consult the CVI help.
Chris