Nice Fix.
I was having trouble with Hexadecimal values. For example, if "62E5" was written, it would be converted to "6200000", not good! The below allowed me to write Hexadecimal values to Excel without converting them to decimal.
1) Open ...\national instruments\LabVIEW 8.x\vi.lib\addons\_office\_excelsub.llb\Excel_Insert_Table.vi
2) Delete the two property-nodes Range>>Value so that the VI looks like the attached screenshot "Excel I.jpg"