A random post.. I suspect the professional photographers out there might just laugh at this, but it's so easy I wanted to share how I've been creating passport-sized photos for all our documents (immigration papers, visas, passports, etc.) for years. Why not save $20 or so if you can Do-It-Yourself? I think some of you may find this helpful.
Open your picture with Picasa. Go to Basic Fixes and Crop it to "Square: CD Cover" (after I took this picture of Eva's Bratz girl and she saw her on my computer screen, she grabbed her right away and won't let go of her, in fact, she and Jemma are now fighting for it because Eva won't share!):
Under 'Tuning' you can edit your picture by adjusting the lighting, color, etc.