Shared Internet access with two NICs

If you have two computers and want to install dual NICs on one machine to achieve shared Internet access between the two computers, how should you set dual NICs to achieve shared Internet access!
HOST: the operating system is Windows XP, with a built-in nic and a pci Nic.
Client: the operating system is Windows 98, a pci Nic. Connect two computers with a crossover cable (which is distinguished from a common network cable, that is, twisted pair wires. The built-in Nic of the host is connected to the PCI Nic of the client.
Settings: the host's built-in Nic IP Address --> 192.168.0.1, subnet mask --> 255.255.255.0. Do not fill in the gateway. The client can automatically obtain it.
Host's PCI Nic IP Address --> 192.168.0.2, subnet mask --> 255.255.255.0, the gateway does not need to be filled. Confirm that the host PCI Nic is connected. Double-click the icon to open the Properties dialog box. In the advanced column, select "allow other network users to connect to the host over the Internet ". This is the basic setting. If not, check the firewall settings of the two computers. Set it to low. Dual-network cards can certainly achieve shared Internet access!