Hi!
You will need LAN card connections between the computers. I use a program called Wingate and have seen programs in the stores like Winproxy and Sygate. Most of these will work in Windows 3.1, Windows 95 and Windows 98. But I don't know if they will work accoss versions. I have seen many problems on these boards trying to get a Windows 98 machine and a Windows 95 machine to network. So 3.1 to 98 is an even bigger stretch.

Most of these programs make the machine hooked to the Net, a server for the other machines. So the operating system may be of no importance. I have had 3 remote computers on with my computer (max for this program). I have also seen shareware or freeware version of these proxy's out htere.

Dennis