Multi-Player tips can be found here

[Molon Labe]

I don't know if this has anything to do with connecting with different operating systems, but this is the starting point for connection problems generally (copied from CADC):


You can find a ReadMe in the Dangerous Waters installation folder which covers Multiplayer issues, however for convenience here are the highlights.

1. The IP address shown in the Gameroom for the Host in Multiplayer is the local IP address and may not be the IP address needed by other players to join your hosted game. One method to determine the IP address for your computer with respect to the rest of the Internet is to browse the website: http://www.myipaddress.com/ That website will display the IP address clients will need to use in order to join a Multiplayer game. Also, if you have a firewall installed and active it may not allow you to connect in a Multiplayer game.
2. SCS-DW uses DirectPlay 9.0c for its Multiplayer connectivity. In order to connect to other players in a Multiplayer game, it may be necessary to open ports in the range 2302-2400 in your firewall and/or router for TCP and UDP packets.
3. SCS-DW attempts to determine which network adapter your computer is using when connecting in Multiplayer games. Sometimes this default selection is incorrect and can prevent connections to/from other players in Multiplayer games. In order to determine if this default selection is causing problems, first start SCS-DW and "Host" a game. At the Gameroom screen, the adapter that was chosen by SCS-DW will be displayed in the chat window. It is suggested that you write this down. It may look similar to the following:
   • Local Area Connection - IPv4 - 192.1.168.69
   • Then using Windows Explorer, browse to the directory where SCS-DW was installed (DEFAULT: C:\Program Files\Sonalysts Combat Simulations\Dangerous Waters) and open the file "adapters.txt".

     The following is an example "adapters.txt" file
     
     This file contains all adapters found on this system:
     Local Area Connection - IPv4 - 62.1.168.69

   • The adapter that SCS-DW will pick is the "Local Area Connection" adapter, but in some case there can be two adapters on a given system:

     This file contains all adapters found on this system:
     
     Broadcom Ethernet Adapter - 68.132.123.45
     Local Area Connection - IPv4 - 192.1.168.69

   • In order to force SCS-DW to pick the "Broadcom Ethernet Adapter" you need to edit the file "dangerouswaters.ini" as follows:
     • Scroll down inside the "dangerouswaters.ini" file to find the keyword : .AdapterName "IPv4".

       In the example "adapters.txt" file above, the .AdapterName keyword would need to be changed to : .AdapterName "Broadcom Ethernet Adapter".

   • After making the change, save the "dangerouswaters.ini" file. Next time Dangerous Waters is run it will use the adapter that you specified.

• It is recommended that the numerical address portion of an adapter be left out of the .AdapterName. This will allow SCS-DW to still connect successfully if your ISP changes the IP address being used. (This is common with cable/DSL Internet connections.)
• It might help to open up port 6073 in addition to the ports 2300-2400 that the DW Readme suggests.

If using DirectX 8 or a later version...

Connection // Ports for Client Configuration // Ports for Host Configuration

• Initial UDP Connection // 6073 Outbound // 6073 Inbound
• Subsequent UDP Inbound // 2302-2400 // 2302-2400
• Subsequent UDP Outbound // 2302-2400 // 2302-2400

Open all these... for all protocols.

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I'd also check to see if it makes a difference if you use your computer IP vs. router IP, both for adapters.txt on the host machine and the IP (if any--you might not need one on a LAN) the client is connecting to.

[convoy hunter]

when I am going to connect it says that I have directplay 8