Is there a plugin/app that I can use to see other objects (and maybe have access to them) for my VUDuo2?

I have a BT Home hub 5 which also has a usb port on it, is there any way I can get at any other objects plugged in to my BT Home hub? eg. on the same network or plugged in to the usb port as I want to plug add other HDD's on to my network and hope to be able to access them as my VU has just a 1TB drive and it's nearly full.
I want to access home/holiday videso on it but don't want to have to delete just about everything on the existing hdd in the VU and copy them onto it.

Thanks

wd