Some older games like Bleifuß Fun only work via IPX. They don't use TCP/IP. IPX is similar to TCP. It was developed by Novell to offer data transport via computer network. For quite some time it was used parallel to TCP/IP. After the success of the internet in the private sector, the TCP basis was developed further, and is nowadays the de facto standard. Since then, IPX is considered to be obsolet. In some versions of Windows the protocol was still available but not installed by default. Until Windows XP IPX support was still provided by Microsoft. Vista users needed other means to install IPX. For x64 Windows versions there is no IPX support at all. But usually those are not the only problems with such old games on newer Windows versions.
As IPX is not installed by default in Windows XP here is a small step by step manual, on how to do that. It uses the (usually properly working) standard settings. In principle it is only necessary to install the IPX protocol itself.
Open Network connections, right-click on your LAN card and select Properties. You should end up here:
Klick on Install. The following window should open:
Click on Protocol and Add. This window opens:
Select the NWLink IPX/SPX/NetBIOS compatible transport protocol and click on OK. Now you can close the properties window. The rest will be taken care of by Windows itself.
Windows Vista doesn't support IPX by itself, not even the 32 bit version. This makes third party tools necessary:
NWLink IPX/SPX/NetBIOS Compatible Transport Protocolfrom the list,
Now the IPX/SPX protocol should be available.
This is not an official Microsoft software installation. Any damage to hard- and software is strictly the responsibility of the user.