It looks like you've already claimed your listings on Trulia. If you view them you should see your contact information listed towards the bottom of the page, and if you upload a picture to your Trulia profile, that photo will display on your listings along with your contact information.
To upload your photo, access the link below and select 'Edit profile' on the left side of the page. Next select 'Change photo' under the current place-holder image.
Please let us know if you experience any difficulties with this process or if you have any other questions.