In order to do that you have to start with out an operating system. And yes, you do need the CD KEy to install any version of windows 98. Doing a fresh install is always the preferred way, you have so much less trouble down the road. I don't think it did.
System works great now.
If it does not work you will have to do a full install which is a pain, but the best way really. Net is the opinions of its users. Such opinions may not be accurate and they are to be used at your own risk. Net cannot verify the validity of the statements made on this site.