Wow Thanks...
Ok I had just a white sheet with some lights pointing directly at the background ( I forget who in here told me that secret)... I used Photoshop CS3
First I duplicated the original image to a copy.
Layered the new image from the background to a layer
Made a new layer with a white backdrop.
Next I made a quick selection around the image using the Quick Selection Tool
While I had my selection, I used the Levels tool to change the background to the white that you see.
After I had my background, I changed the shirt colour using the Hue and Saturation tool, then I did a little healing brush to get rid of blemishes, then I gave her some green eyes.
I think thats how I did it..
I flattened the image and used the unsharpen mask to sharpen it a bit