The raw raw file is unchanged, All you've done is create a list of "meta" instructions for processing the file. Now you need to process it.
You can process and get the file out of Lightroom a couple of ways. One is to select Process in Photoshop CS2 (CMD-L). This will send the file to Photoshop for further editing.
The other is to select File / Export. You can now export the file or files selected to either JPG., TIF or DNG formats.