excel file creation on application server

Gurus,

I have seen a lot of threads on excel file creation in application server, but failed to see if anyone had a solution.

Problem: In background execution I need to create an excel sheet on application server, the data would be contained in internal table, The FM like WS_DOWNLOAD etc..cannot support these as they have GUI component.

All the documentation that I have been through states to use dataset which saves the file in.csv or txt format seperated by delimiter, is it possible to save as a true excel file.

same as this thread:

excel-download-in-application-server

let me know,

Thanks in advance .