I have a HP iPaq 1900 that only has an SD card slot and an iPod hard drive with 20gb and ata 6. SD cards are too expensive and I want to make use of my hard drive. Is there a way you can think of that can connect the hard drive to the iPaq? I was thinking of buying an SD card reader, connecting the SD card reader's circuits to the PDA's card reader (I may post pictures to help explain the connection), allowing an SD card placed in the commercial card reader to be read by the PDA. But the main point of this is to use the USB on the end of the card reader to connect the hard drive via USB to ATA 6 adapter. Do you think this will work, and do you know a method that might work?