www.bootdisk.com and download a Window98SE boot disk. If it gives you the error message the floppy is bad. If you can boot this way, you will need to format the drive and reinstall Windows, whatever kind you like, but probably 95. Hopefully you have the CD for this and the number.
If it is giving this error message with no floppy in, then either the hard drive is corrupted, bad, or the onboard IDE controller is shot.
What specific CD's do you have?