I'm having trouble connecting my external hardrive to my network. Here are the details: 1. I have a Macbook 5.1 and am running OS 10.6.8 2. The external hardrive is a WD 300 Gig hardrive that my Macbook recognizes when connected through an external hub. 3. My router is an Airport Extreme version 7.5.2 4. I have connected my external hardrive to the Airport Extreme via usb hub but it is not recognized. 5. I use a smaller Lacie hardrive as my time machine backup and when I connect this to the network via Airport Extreme USB my Macbook recognizes the Lacie. 6. I also use an Airport Express v 6.3 as a receiver for my stereo. 7. The Airport Extreme and Express get along just fine. Thanks in advance for any assistance.