If your computer came with Win 98, it almost for sure came with Works. Works is a word processor, spreadsheet and database application(s) wrapped into one economical package.
If I was to do this I would use a spreadsheet because it is a little simpler to crunch numbers with. Works has a reasonable tutorial that will show you the basics then you can work out your layout from there.
If you have office, then you will likley have Excel which is a very common spreadsheet and the Cadilac compared to the Works version.
If you like, I have some time on my hands presently...Check if you have Microsoft Works and let me know. I can throw a file together in real simple form and e-mail it to you. You can make up your mind from there.
P.S. Everyone has their preferences in software for many reasons. I respect those reasons also. These are only my opinions...'ows that fer diplomatic!