Here's how to change your password:
1. Click the drop down arrow next to your account name (top right corner of this screen)
2. Click Profile
3. On the left side of the screen, click "Edit Profile"
4. Click "Email And Password & Facebook Connect"
5. Fill out what you would like your new password to be, confirm it by typing it again, and click Save.
Let me know if I can help out with anything more,
Community Manager, Trulia Voices