I recently purchased a Tungsten C as a replacement for my nearly two year old Sony Clie. I had been using the 5 Minute Clinical Consult on the memory stick of the Sony, but wish to install it on the main memory of the Tungsten C. (I have the Unbound Medicine version which I purchased less than one month ago from PDA Cortex.) I have a CD format made by PDA Cortex for storage of the 5 Minute CC. It will not go on to the main memory. I have consulted PDA Cortex, but no answer (4 days). Does anyone have an idea what to do? Purchase a memory card for the Tungsten?