Client & Server PC

I recently gave-up on a firewall, that was a resource hog, on my 98SE server system & decided to try LNS on a 30 day trial. The "other firewall" allowed both PCs to show stealth ports when tested. After setting up the enhanced rules and receiving a stealth comment from all my ports on a testing site from my server PC, I tried to connect my client PC. Needless to say it wouldn't connect to the Internet. However, file to file copying & so forth was still available. I was able to develop a new rule for the server PC to log on to the net. But, after further testing this rule left two ports open on the server & client PC. Strange! Especially when I dedicated ports 1144-1150 and it left ports 1024 & 1025 closed (not stealthed) on the testing site. After a little research I decided to run both PCs with LNS per FAQ. It was after the installation on the client PC that I was successful in having all ports stealth on both PCs!

Question 1: Is it really necessary to install LNS on both PCs if the server is stealth? Wouldn't ICS through a server PC, showing all ports stealth, protect the client?

Question 2: IF it is really necessary to run LNS on both PCs, then how about a better pricing structure for having the product on both PCs instead of being penalized for having two PCs I know! I'm cheap! (That is why I like freeware so much!)