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.
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>My client says there is no driver for Windows.
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>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.
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>The client wants to be able to put photos on the device from a windows machine (automatically I assume).
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>>>One of my large clients needs to get windows drivers written for XP and Win7 to access a write once SD type memory device.
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>>>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.