Depression treatment clinic needs logo/banner design

Portland Mood Disorders Clinic

We are a specialty clinic that focuses on providing evidence-based, compassionate psychotherapy services to people who are suffering with depression and other mood disorders.

Our clients are people who are depressed. We want to appeal to a wide range of people from varying ethnic backgrounds. We are located in Portland, Oregon, which has a fairly young, computer-savvy culture that is often fairly liberal. We often get many of our referrals from the internet. We also want to reach out to the gay, lesbian, bisexual, transgender, queer community.

1-3 colors (color, not simply black and white, but black might be good to be one of the colors). The logo will be used primarily on our website, but also on some print advertising, so black and one other color might be best.

We like the green on our website right now (http://www.portlanddepressiontreatment.com/) , but that's not a necessity by any means. We tend to like designs that are more
organic in nature, that are more fluid and suggestive of shapes found
in nature rather than linear and geometric.We are looking for your creativity and help!

A logo is our primary interest, but if it could also be incorporated into a banner for the website, that would be a bonus.

I use Macromedia Fireworks 8 for simple graphics design and manipulation, so something that was in vector graphics and editable in that program would be what I'd want. Photoshop files are usually importable into png files, but I'd want to make sure that it retained its appearance when it was exported to a png file. I think photoshop has the capability to export to png.