How to install the TCP/IP protocol on a Windows 98 PC
In the Windows 'Start' menu, select 'Settings' > 'Control Panel' > 'Network'. Click the 'Add' button on the 'Configuration' tab.
Select 'Protocol' and click 'Add'.
Select 'Microsoft' as manufacturer and 'TCP/IP' as protocol. Click 'OK'.
The TCP/IP protocol is now installed and appears in the list of available network components. Click 'OK' to apply the changes.