Seems the preview aspect is being a real bugger - I don't see anyone successfully doing it with any of the current crop of jquery uploaders.
There are a number of sites doing it, such as box.net which I think is quite a nice one. I found some info on the matter here: http://blog.flexexamples.com/2008/08/25/previewing-an-image-before-uploading-it-using-the-filereference-class-in-flash-player-10/ I have Flash 8 and found it nigh onto impossible to do anything useful. I wrestled with it for a time and finally quit, as it just seemed so retarded AND it liked to randomly crash before I saved my work. So I'm very resistant to getting a Flash 10 upgrade. I'm hoping there's someone smarter than me tackling this monster. Is that the case? Anyone? tnx, Don