Hi, fresno2. Thanks for your posting.
You can transfer yourself, your results and your retained sample to Family Tree DNA.
Go to your National Geographic Genographic Project page.
Log in using your kit number.
On the next page, click on "I acknowledge".
On the next page, scroll all the way down to the bottom. You will see "learn more" in small blue letters near the bottom of the page. Click on it.
Check "I agree".
Fill out the FTDNA form "Adding Your Record to FTDNA" and click "Continue"
You should be able to finish it from there.
Once you have been transferred into FamilyTreeDNA, you will be given access to a "personal page".
In your FTDNA page is a blue button labeled "join".
Click on that button, then select the surname, then select a second gray join button which is lower on the page.
Or, you can call or email FTDNA and ask them to transfer you into the project (713) 868-1438 or http://www.familytreedna.com/contact.html
When you have joined the project, the Project Administrator will be notified by FTDNA, and your results will be available for posting on the Project's Results Page.