Macbook Pro Not Connecting

Well, explain to me this, the MBPs will not connect to my external network drive.  Yesterday everything was fine, but now nothing.  My Windows machine connects to it fine and connects to the Internet wirelessly.  My TV's & Bluerays connect to Netflix fine.  My MBPs even connect to the Internet fine.  Also, when I connect my iPhone to the MBP, it does not recongnize it so I am unable to sync with some my apps like iDatabase, Docs to Go or Money 4.  I get a message that says there is no connection.

I don't know if it will help, but network connections are one of the mentioned fixes:
What's included?
The OS X Lion v10.7.1 Update is recommended for all users running OS X Lion and includes general operating system fixes that enhance the stability and compatibility of your Mac, including fixes that:
Address an issue that may cause the system to become unresponsive when playing a video in Safari.
Resolve an issue that may cause system audio to stop working when using HDMI or optical audio out.
Improve the reliability of Wi-Fi connections.
Resolve an issue that prevents transfer of your data, settings, and compatible applications to a new Mac running OS X Lion.
Resolve an issue in which an admin user account could be missing after upgrading to OS X Lion.

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