Hi Thad, I received your email as well. I think you were referring to my recommendations to download boot disks from freepctech, however, the one from bootdisk is fine too. Please be sure you save it to the DESKTOP, NOT to a floppy disk. There needs to be more than one file on the boot disk, and I'm guessing from your description, there isn't, thus the reason for the non system disk boot error.
Once the file is on your desktop, double click on it to expand it to a floppy disk. Just follow the instructions. On the problem pc, you'll need to have the bios set to boot from the floppy disk first.
I also, would like to know what problems you are having before you continue on.