I found this and followed the steps.
Since your CD-ROM drive is disabled by the Plug and Play BIOS during hardware detection, manually copy the Windows 98 cabinet (.cab) files from the Windows 98 CD-ROM to your hard disk. To do so, follow these steps:
Create a new folder on your hard disk (let's call it Win98cab)
Copy the contents of the Win98 folder on the Windows 98 CD-ROM to the Win98cab folder you created
Start the Registry Editor
Go to HKEY_LOCAL_MACHINE \ Software \ Microsoft \ Windows \CurrentVersion \ Detect
In the right-hand pane right-click an empty space and choose New > DWORD Value
Name it ACPIOption, double-click it, and change the value to 1
Close the registry editor
Select Start > Settings > Control Panel, and then double-click Add New Hardware
Click Next, click Next again, click Yes (Recommended), and then click Next. ACPI should be detected and installed. After your computer is restarted, all ACPI-enumerated devices are set up again.
But there is stull an error. Clicking on the ACPI Battery exclamation mark item shows the error as "The NTKERN.VXD device loader(s) for this device could not load the device driver. (Code 2) ARGHH!! Stuck again.