I give up, tried everything, it wil find the hardware, but when it trys to instal all the software, it ask me to insert the windows 98 se2 disk, which we do not have

It tells me there are like 5 or 6 system files missing, who ever owned this did a bang up job of distroying it, but they forgot to take out their picuters and addy, lol, good think I am not a stalker, andyway, if someone has any ideas on how to get the missing files, let me know, I will try and get the name of the files later today