Hello...My name is Robert, and I am already familiar with using the Windows command prompt to execute "copy *.xls combine.xls" in order to VERTICALLY join multiple Excel files. However, I am seeking a Windows command prompt function or an Excel macro for HORIZONTALLY merging the workbooks into a single workbook. Furthermore, I am not interested in using Power Query, Linux, Unix, etc. to accomplish this task due to the fact those programs are unfamiliar to me. Any assistance you can provide will be greatly appreciated.