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The subject line says it all. Have a WinXP SP3 guest on Vista Home Premium with all the latest patches. Virtualbox is 3.0.4r50677. I have a Seagate exteral hard drive with a USB interface and various USB flash drives. I installed the guest additions in the guest and the additions icon is in the guest system tray. I have no filters on the guest setup. The various devices appear on the Devices-USB Devices menu and I can click them and their status shows captured, but the devices never appear in the XP guest.

Any advice on troubleshooting would be appreciated.

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Thanks for pointing me in the right direction. I had done everything right, but I guess I wasn't clicking on the guest screen. Once I clicked the guest screen and plugged in the device, it was recognized within about 60 seconds.

Thanks again for the help.