Hi Dom,
well, I'm not using your office suite as I am currently stuck with M$ Office.
To open a .csv (comma separated values; will explain later) file you use excel.
File-> Open As (if available, otherwise just plain open).
Then you should get a big list with all the info for each flight in one continuous line.
That's where the comma separated values kick in. Each field is separated from the next by a designated character, sometimes a comma or a semicolon, or quotes or something.
In order to tell EXCEL that after each appearance of the designated character a new column starts so that then you will have a separate column for each field you need to:
Data -> Text to Columns
Then tick the option 'delimited' and choose the character used to 'delimit' the fields. (In EHM's case it's the semicolon ; )
Click OK and it should now look like a 'normal' spreadsheet.
Sorry, if it's a bit long but that's how you open a delimited (csv) file.