Hi Eric,
check Dick Smith. They should have
5m USB active cable
I am using two of them and they work fine. Just be aware that you cannot put any other USB cable between this active cable and your laptop USB port as it'll be over 5m which is a limit for USB. However you can connect this active cable to your laptop, then connect any another USB cable(s) to this active cable and finally connect it to your camera.
Also if an extension cable is built well it may be possible to connect up to 6 active cables to reach 30m in length.
The whole idea of these active cables that they pick almost degraded signal at the end of the extension, burst it and repeat it further for another 5 meters.
cheers,
Mike