Posting an Item twice wil upset the "boss" of this forum!
He is even capable to lock the post!
As the problems are, There is one solution.
1 Can your system boot from a CD-Rom?
(If not, this is gonna be difficult)
2 Backup ALL essential data such as e-mails and documents.
3 Format the hard drive with the /U switch.
4 Boot from the original Win98 CD-Rom and start installing Win98.
If not booting from CD-Rom, boot from a system-disk that have driver for CD-Rom and Mice on it.
Insert the Win98 CD, browse to the win98 dir, Enter setup and install should commence.
Sometimes there could be another win98 Subdir INSIDE a win98 subdir.
Go down the tree until you will find a bundle of .cab files.
There should "Setup" also be located.
If no system-disk, mail me and i will sent you an image and a restorer for a floppy-Disk so you CAN startup with CD-Rom support.