Linda, if you have an account, go to this link: http://www.trulia.com/submit_listings/
You can post a listing if you're not an agent. Click on submit a listing. You will want to change the drop down to either home seller or home owner.
If you need any assistance, please email me and I will assist. I still work the cape often and if you need professional assistance to get your property sold at a premium, I would be happy to meet with you.