>Thanks- the byte array tip and a couple of hours searching the web allowed me to figure something out. I'm now making progress. I never wrote a web service before.
>
>DB

This approach is okay for tiny files, but I wouldn't recommend it for anything that takes longer than a couple of seconds to transmit.

To handle large files, you will want to use some javascript to launch another browser and send the file to a separate web service, one small chunk at a time.