Hey guys,

I've got a mobile application written which can browse through directories on the handheld device. This links to a C# application on windows via a usb cable (Simple phone cable). now i'm wondering how to go about transfering a file from the device over the serial conection and out again.

Any pointers?

Please correct me if I am wrong, but I don't think it is possible to send files via the serial connection, but you can use bluetooth or obex for that.
What kind of file do you want to send? If it is a simple text file you can send the each line as a string via the usb and then create the text file on the pc side and fill it with the data from the device. If it is an image you need a decoder, that can be quite tricky, since there is no support for that in j2me, that I know of at least.