WD 500g fell down, now won't mount!

Hello everyone,
I don't know if this is the right place to be asking this, but its a start.
I have bought a WD 500g My Book pro, I have almost 350g of info on it. Yesterday, my wife tripped over the cord and it fell down on the floor.
Now, when I plug it in I get this error message:
"The disk you inserted was not readable by this computer"
Initialize.. Ignore .. or Eject
Ignore and eject nothing happens, when I hit initialize, it takes me to the disk utility.
I see the hard drive on the left panel named: "2.0 TB WD External Media"
Strangely, when I click on it it says: "2TB" as in 2 TeraByte of storage! Its suppose to be 500g, Only.
I know if I probably hit format, it will work again, but I really need the files on the Hard Disk. Is there anyway to get it to work?
PS. I tries Data Rescue II and Disk Warrior, nothing happened.
If anybody can help direct me to the solution or the right place to get help for this I would really appreciate it.
I can't take this to an APPLE store, I'm not in the states ATM.
Thank you in advance.

It would be best to find out first if the hard drive itself has been damaged. Typically inside those prepackaged Harddrive enclosures you will find a regular 3 1/2" harddrive, either ATA/100 or a SATA type. Sometimes you might find a 2.5" drive, but at 500GB, its probably a SATA 3 1/2" drive.
With any luck its just the enclosure itself that is damaged, and not the hard drive. Physical trauma such as the read/write head(s) smashing into the platters can happen after a fall.
First off, the easiest thing to try is a new USB cable. Its a small possibility, but should be tried.
Do you have access to any IT personnel? If you dangle a case of beer in front of them, maybe they can help with the diagnostics. He/she can remove the drive from the Western Digital enclosure and hook it up to another system to determine if its salvageable and maybe pull the data.
As far as a Linux install is concerned, various Distros offer a LiveCD/DVD option which is a complete operating system on CD/DVD with no need to install. Sabayon Linux offers a specialized LiveCD ISO for download, as does Ubuntu. Download the disc image, burn it, and boot the system from the CD/DVD.
I haven't tried it yet, but there is probably enough intelligence within the usb subsystem on the Ubuntu LiveCD for it to automatically detect the HFS+ partition on your Western Digital external box.
JeffEmbracedDC below mentions a Windows software that will allow you to read HFS/+ partitions. You could always give that a go.

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See the lower part of > http://support.apple.com/kb/HT1317
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