Hi sruly,
What error are you getting when you call this method?
Can you post your function call?
Are you just looking for the prototype?
Here is the prototype that I found.
Excel_OLEObjectsAdd (CAObjHandle objectHandle, ERRORINFO errorInfo, VARIANT classType, VARIANT filename, VARIANT link, VARIANT displayAsIcon, VARIANT iconFileName, VARIANT iconIndex, VARIANT iconLabel, VARIANT left, VARIANT top, VARIANT width, VARIANT height, ExcelObj__OLEObject *returnValue);
Gavin Fox
Systems Software
National Instruments