In order to use Google's webmaster tools, such as Google Analytics you will need to verify your site with Google. Verifying your site allows Google to confirm that you own the web site.
Google provides instructions for verifying your site with them through their Webmaster Central support center. You can read the article here.
From Google's Support Site:
"You can add up to 1,000 sites, including news and mobile sites, to your account. In addition, we'll ask you to verify your site. This is because we need to know you own a site before we'll show you certain information about it or enable you to use our tools. Verification doesn't affect PageRank or affect your site's performance in Google's search results."
In the Choose verification method list, select Upload an HTML file, and follow the steps on your screen.
Using notepad, create the file that Google asks for and make sure to save it with the exact name they ask for (for example, google11e5844324b7354e.html). Tip: Make sure to select the option to save as all File Types when you are saving the file or you will end up with a file named google11e5844324b7354e.html.txt
Note: The filename is case-sensitive and must have an ".html" extension. The file itself can be empty - we don't read the content of the file, but only check to see that it exists in the specified location. Upload the file to your web server to the location we specify. Generally, this is the root folder for your site.
Once you have uploaded the file, click Verify button. We will verify that the file exists in the specified location. If we can't access the file, we'll give you information about the error we encountered. Once this problem is resolved, try to verify your site again.
How do I upload my HTML file to my Webs Account?
Log into your Webs.com account after you have used steps 1 through 4 above to create the file
Go to Edit Site and click File Manager
Select Single File Uploader
In the Upload a File pop over click Choose File and browse to the HTML file you created in step 4 above
Click Upload File to upload the file to your account
Once the file is uploaded, you can perform step 5 in the above steps to have Google verify your account
If you are trying to increase your search engine ranking, we recommend you research "web site optimization techniques" in Google, as the process of getting your site listed at the top of search engines can be time consuming. There is a great deal of competition at the top of the search engines, so the more you know about the subject, the more successful you will be.
Remember, we cannot provide support for Google or other search engines, so if you have questions about their products, we recommend you ask them directly.
Error: Your 404 error page returns a status of 200
It appears that many users are receiving an error message from Google when attempting to verify their web site with Google.
""We've detected that your 404 (file not found) error page returns a status of 200 (Success) in the header.""
This most commonly affects users without domain names registered to their accounts. Domain users can add their own custom 404 error pages resolving the error message Google gives. Additionally, some users have had success adding the Meta Tag through the Tagline of their web sites through the Edit Title and Site Footer section of Edit My Site. This method is not supported by Webs so we cannot guarantee it will work.