I saw Grimmace's recommendation and link to get a 128MB MMC on eBay and I bought one...just received it. It works on the iPronto, that is, the iPronto formats the MMC and then saves the current .icf file to it. But that's as far as I get. My Dell Inspiron XPS Gen2 running XP SP2 does not recognize or read the card. It see what it calls a "mobile device" but recognizes nothing on it. This seems to be the reverse problem others are having, and I wonder if anyone has come across this issue and resolved it.