New pboblem: now I've lost the DAT directory

[daglob]

I was trying to send some minions to the Dat file from EZ Hero, and the location panel is blank. I've always saved stuff to where ever the default directory was, and haven't changed it. I don't know what I did to make it blank, but I've never paid attention to what the directory was supposed to be. I have no idea where to change it back to.

Help?