If it were me and I absolutely had to have what you want, I would probably embed an Excel workbook in an ActiveX container on the Front Panel and use the ActiveX Properties and Methods to fille the table in and merge the cells that need to be merged.
That being said, it will be a lot of work, and I would look at any other alternative to display my data.
You could also look into embedding Internet Explorer into an ActiveX or .NET container and use html or other such language to generate the table of data and display it as a web page.
Please note that these solutions require Excel or Internet Explorer to be installed on the system your deploying to. Upgrading your version of IE or Excel will most likely require a recompile of your code as well.
Like I said, it's a big headache, but probably the only option you have if that is the way you want your data displayed.
