Bino,
First, check that you have 2 disctinct IP addresses for each computer on the LAN.
IE, Dad should be 192.168.1.1 and GIRLS should be 192.168.1.2.
Subnet mask in both cases should be 255.255.255.0.
You enter this in TCP/IP properties FOR EACH OF THE 2 NETWORK CARDS.
If you've done that, try and share your C drive. (make sure file and printer sharing is enabled). Sometimes, a computer will not appear in Network Neighborhood if it has no shared resources on a Win98 network.
Make sure that you have ZoneAlarm on to protect your shared resources in the Internet Zone (it has 2 zones, 1 for local net and another for the Intenet). Set the Internet Zone to high protection.
Let me know how you get on with this, then we'll work on the ICS!!
One more thing..... you need Logon for Microsoft Windows not Windows Logon .
And don't forget the friendliest, most helpful, networking-for-beginners site on the Web:
http://www.helmig.com
Cheers
GE