>>I suggest that your client buy a USB card reader, they are usually sold for 10-20 USD. Make sure that the card reader accepts SD type memory cards.
>>
>>>>Are you sure that you really need a device driver at all? Most memory card readers come with a driver CD, but usually the driver CD is not necessary. For Win7 I doubt that you need to install the driver, for XP maybe.
>>>
>>>My client says there is no driver for Windows.
>>>
>>>Apparently this device is normally only used on cameras - primarily in legal circles to document something photographically. These allow writing a file once - no updates.
>>>
>>>The client wants to be able to put photos on the device from a windows machine (automatically I assume).
>>>
>>>
>>>>
>>>>>One of my large clients needs to get windows drivers written for XP and Win7 to access a write once SD type memory device.
>>>>>
>>>>>If you have experience (good experience!!) developing device drivers for Windows, send me an email with contact info and relevant job/project history and I'll forward your info to my client.
>
>This is the device..
>
>http://www.dpreview.com/news/1006/10062301sandiskwormsd.asp
>
>There are apparently only a handful of specialty cameras that will write to it. My client needs to write to it from a PC based camera.

I don't know the specific SD card you refer to, but I would definitely try it in a USB or internal card reader which can handle SD cards. In principle a SD card is a SD card, the write once feature is most likely done by simply ignoring the write signal once the cells are written to, in hardware.