Thanks for the previous help.
I am looking into macbinary but let me elaborate on what I'm trying to do. I want to make an upload form which when used by a Mac user will encode a file such that if I access it with a Mac after uploading, it retains creator/type information. Does the encoding have to be done prior to upload, or can it be done during? I cannot rely on the client to name files or encode them properly. BTW, our server will be using OS X Server.