Hello,
I recently purchased a DIR-655 router (Hardware: B1, Firmware: 2.00NA) .  Initially, I installed SharePort on my laptops and was able to see the drive and connect to it through the SharePort utility.  Now when I open SharePort on each of my laptops, it says:
"No device servers were found on the network.  Make sure your device servers are set properly"
I've tried restarting the router, unplugging the external drive, and re-installing SharePort to no avail.  Any advice would be greatly appreciated.
Cheers,
Jon