Local Analytics Plugin Error

Hi,
I uploaded the Local Analytics Plugin and it’s giving me this error:

“local-urchin.js does not exist“

So I went to their homepage and found the answer to the problem, which is:
“The plugin automatically downloads and stores a fresh copy of urchin.js ga.js in the plugin directory, under the filename local-urchin.js. While activating the Local Analytics, if there are sufficient privilages, the plugin will automatically create the file. If it fails, then you will have to manually create the file and chmod it 0666. The best idea is to chmod the plugin directory 0666, before activating the plugin (so that the file will be created automatically on plugin activation).”

Can someone please translate this into layman’s terms? The simpler the better..I’m talking local-urchin.js for dummies. I don’t even know where to begin in creating this file.

Thanks 🙂