Design a poster from my website about us information

From the following URL: http://www.davincilabs.com/index.php?l=page_view&p=about_us

I would like a poster designed in PSD format with a PDF image, in high resolution. this would need to be designed in a format to ensure that i will be able to print the image upto and including a size of 36inches by 48inches.

it should also include: As a nation, we eat poor-quality foods that have been stripped of nutrients. We do not consume enough fresh fruits and vegetables. Many of us get our whole grains from instant rice, refined wheat breads, pastas, and cereal. We eat a tremendous amount of prepackaged, pre-made meals. One-quarter of Americans eat at fast food restaurants each day. Americans are overfed and undernourished.
There is good news:
Given proper nutrition, the human body has an amazing ability to heal itself. To do so, we need to eat a healthier diet, exercise, and take high-quality supplements made from whole foods. Whole food supplements supply our bodies with nutrients we are not getting from our diet, all the vitamins, minerals, trace minerals, and phytonutrients that foods possess in a way that nature intended, in a whole food form.


you can also get information about my company from doctormaan.com and mylogo will be supplied

i would like this to go through about 3 revisions max