I can't actually connect the camera via USB - as i've managed to break the socket in the camera - hence i wanted to use my card reader!! Card works fine in Cam.
JP - shouldn't really need drivers for cam should it?, should only need them for USB hook up? I have to be honest, i was expecting the "reformat" suggestion.

but i haven't had it from them! No network drives, and if you remove card, icon disapears as you'd expect.
I tried a theme on drive letters. Before putting MS is reader, i put my USB pen drive in, which then took drive letter F. Then put MS in, and it took letter G, still no change (well, apart from it telling me to insert a disk in drive g!!)
HP have now given up on the drivers/software idea and decided it must be a hardware fault - well, the guy that emailed me from far off lands has anyway!!! So he's saying to call them and i then suspect send it back. If it comes to this then so be it, but would REALLY like to avoid that!