well..I all I need to do is..connect the USB floppy drive on my PBG4 then I insert the floppy and it shows on my desktop...no problem at all.
are you getting an error? or what...I dont see why you cant see a floppy disk?
With my floppy drive, for some reason, you have to insert the disk BEFORE connecting the drive (or disconect and re-connect after insterting the disk) in order for it to mount. Don't know if this is the case with yours though.