Installing the NDIS2 driver for CardBus card is the same as for PCI card, in addition to the following steps: After install driver in Microsoft Client or Windows 3.11 1. Check config.sys and remove the argument "NOEMS" of EMM386.sys 2. Copy rtpci.exe and rtbios.com to any directory. Example c:\wfw311 3. In autoexec.bat, add two lines of command, "rtpci /md000 /i11" and "rtbios" in front of "net start" and "net initialize". Example: If only "net start" exists, : : c:\wfw311\rtpci.exe /md000 /i11 c:\wfw311\rtbios.com c:\wfw311\net start : : or if "net initialize" exists, : : c:\wfw311\rtpci.exe /md000 /i11 c:\wfw311\rtbios.com c:\wfw311\net initialize : : 4. Restart the computer.