I'm having difficulty trying to set up a simple peer peer network between my new Dell 8300 running XP pro and an older Windows 98se computer.  I have a crossover cable connected to both of the computers through their respective network ports.  I ran the XP network setup program, made a floppy disk, and ran the setup program in the 98se machine.  I enabled file sharing in the 98se machine.  I turned off the firewall in XP.  Both computers, when they aren't connected to each other, can independently access the internet through a cable modem.  When I go into network neighborhood or network places, only the machine that I'm currently on is listed.    I am running the firewall program Zonealarm on both machines.  Zonealrm can display the IP address of any remote computer that is trying gain access to your machine.  I got the IP addresses for both my machines using the ipconfig command at each computer's command prompt.  I'm unable to ping any one of the computers from the other computer and Zonealrm is not even notifying me from the "pinged" computer that a ping has taken place.  I'm thinking maybe the network cards are not compatible with each other?  I don't know.  Should the subnet masks be the same on both machines?

I'm not sure what to try next.

Thanks for the help.