Well, I finally figured out that the Hard Drive has just gone bad. (luckily I have a 3 year warranty on it)
Here's what I did to try and save any data, just in case it might help someone.
First I made an evox cd so that I could get into the box via the network. When I ftp'd into it, nothing was on any of the drives except the d, which of course was just the cd rom drive.
So I figured I lost everything anyway and tried to reformat it. But when I tried to write to the drive it gave me errors. I brought it to work and ran the western digital diagnostics on it and it came back with error code 0550 which basically says the drive is bad and needs to be replaced.
The last thing I'm going to try is to boot into winpe and run some data recovery tools on it and see if I can retrieve any raw data. Most likely this won't work, since the drive is in fatx format. But I'm still going to try.
After that it's off to RMA it.
Thanks for your help.