I just purchased a usb to serial adapter in order to use a windows program requiring a serial port for data access. Under the usb settings for windows xp professional I see a usb fast serial adaptor button when I connect the adapter to my mac powerbook G4. However, when I select the box the setting is not saved thus the usb adapter is not made available to me. Does anyone know how I might work around this problem or find a more workable way to install a serial port to my MAC for access through Virutal PC 7? thanks.