What issue are you trying to solve? (Score 1)

What issue are you trying to solve? Is it a matter of managing the data, or querying/reporting on the data? If it's managing the data, then a spreadsheet is probably a good choice. If it's querying/reporting, since you've already got the flat-file with Notepad, you might look at LogParser from Microsoft (http://www.microsoft.com/technet/scriptcenter/tools/logparser/default.mspx). While not F/OSS it's very good at parsing data from various file types for queries and reports.