What is your program - Photoshop Elements 9 or Premiere Elements 9? If Photoshop Elements 9, you have posted in the wrong forum. You have posted in Adobe Premiere Elements Forum (video editing). Although Camera Raw allows for the import of raw format image and dng into a Premiere Elements project as source media, you cannot "process" it in the Camera Raw dialog. You need Photoshop Elements for that.
If your program is Photoshop Elements, please re-post your thread in the Adobe Photoshop Elements Forum or wait for a moderator here to see your thread here and move it from here to there.
Some information that might help as you take care of the above....
Does your current problem exist with and without antivirus and firewall(s) disabled?
Are you getting an error message (number/code) associate with your Help Menu/Update?
The latest version of Camera Raw that is supported by version 9.0/9.0.1 seems to be 6.5. Do you have that currently installed?
If you cannot get the program's Help Menu/Update to work for you, then download and install Camera Raw 6.5 from the following from Adobe
What camera are you using to generate your raw format images.
If it is not yet supported by 6.5, then
a. move to a later version of Photoshop Elements that supports a later version of Camera Raw that supports your camera.
b. use the dng converter