you need to give us more information about the file.
What is the type of file ?
Is that a delimited file.
If so, what is the delimiter.
If thats some other file which needs to be processed and then to load into excel sheet.
perl modules to read / write / update excel file is readily available.
Excel file can be created from the source file and then transferred to windows
Mod / Admin : This should be a new thread.