Your request for the support of Excel 2.x format has been logged into our system with ID CELLSNET-19906. We will work on it and will update you with the possibilities.
Well, we only support the Excel formats of 97-2010. We do not support the file format of Excel 95 and older versions. At the moment, we have no plan to support them as we have many important tasks to be implemented for Excel 97-2010. When we plan it, we will let you know about it.
Thanks for your understanding!