Presumably a long time since your computer was first brought to life, but -- you may be luck if you try what follows.
Is there a folder on your hard drive named W98? If there is then you have the missing files there even if they are not on your restore CD which they should be.
Go to control panel (add/remove programs)Click on Windows setup tab, then choose Accessories.
Click on the details tab and tick any blank boxes for the things you want like Paint.
Then either OK or "have disk" and browse for the W98 folder or the restore disk ...... and the best of luck!