I just received my W800i and I was keen to get some songs onto it.  It comes with a 512mb Memory stick with and duo adaptor.  The problem is I can't get my computer to read it.

I purchased a USB Bytestor Memory Stick Reader so that I could load some MP3's on directly without having to add additional software to my computer.

I popped it in, the computer recognised new hardware and it comes up as drive F, but when I went to open the drive it asks to "insert disk into drive F".  When I take the memory stick out the adapter and put it back in again it still doesn't recognise that the memory stick is in. 

Does anyone know why I can't read the memory stick?

Sandisk Memory stick Pro Duo > Sandisk Memorys Stick Duo Apator > Bytestor Reader > USB 2