I have looked at the code for your page, and it's not that the text is right justified, the text is centered (look at the text "Aircraft Sales & Acquisitions" to see that it is centered), the pictures are what's not actually centered, they are left justified in the container that they are in.
I can do this fix for you if you'd like, or I can even work with you doing remote control of my computer here to be able to fix it and you can see how I did this... I often work with people and show them what I am doing, and how to do what I do if you'd like. I am available for this work later on tonight, most evenings or weekends any time...