Cannot see/access hub from wiz 7

Now I know this problem has been answered, but I cant find it.

I’m on origenal Firmware.

The WD hub can see my network and I’m streaming the music from my old nas fine.

But I cannot see the hubs drive and folder on my Win7 machines. So I cannot transfer my pictures and vid files the the Hubs harddrive. Twonky is reporting (0) 

I think the answer lies in the Win 7 network setup?

Many thanks in advance

See if this tutorial for troubleshooting helps: