I have another Linksys PCMRDWR reader / writer, so I installed it into a Win 98 machine. With the Linksys PCM100H1 PCMCIA card inserted, I installed drivers for the reader / writer and card. Also setup the IP address for the PCMCIA card. The HPNA part of the card worked fine under Win 98. Using the PCMCIA HPNA connection I was able to get two Win 98 PCs to ping each other. Under Network Neighborhood, Properties, Linksys PCMCIA TCP/IP, Advanced Tab there are settings for: Connection Type 100 Mbps 100 Mbps Full Duplex 10 Mbps 10 Mbps Full Duplex Auto Sense HomeLAN Phone Line Config Auto Config High Power / High Speed (HPH // line was truncated High Power / Low Speed (HPLS // Low Power / High Speed (LPHS // I selected Connection Type = Auto Sense, Phone Line Config = Auto Config Is there any way for me to configure this ( Auto Sense / Auto Config ) under Linux ? Or a way, at least for now, to write to registers, without using a config file ? Do I have a chance of modifying the code to add this, if it isnít already there ? Did you use a technical reference manual/spec in writing the code for the Linksys PCM100H1 PCMCIA card ?