Hello,
There is a pretty popular helper called uploadposthelper being used:
http://code.google.com/p/nascomaslib/source/browse/trunk/src/be/nascom/flash/net/upload/UploadPostHelper.as?r=7
It allows you to take a fileName, byteArray, and parameters object as input and return ByteArray post data suitable for a UrlRequest as output.
When POSTing the bytearray to a page, with ASP.net you appear to have to receive the data as an inputstream. The problem is I don't know how to get the individual info that the helper provides within the stream. There are only php examples.
So for instance if you send the bytearray data to an ASP.net page with filename and image data in the bytearray, there should be a way to get the filename and then save the image.
In PHP: $_FILES[ 'Filedata' ][ 'name ...
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