Figure out why images are not aligned inside DIV - Easy

Hi, I am having a problem with images not aligning in the center (horizontally) inside the div tag. If you go here <[login to view URL]> and take a note of where it says Select This Package, this image should be aligned in the middle inside the Standard column/image. But it's not - it is currently aligned to the left of that column. I need it to be aligned in the center (horizontally) and when I mouse over it the image that pops up on mouse over (with what appears to be a radio button checked) also needs to be centered. Can someone make changes to the code and let me know what I need to change/fix? I imagine minimal changes are required. So this should be an easy task for someone who is skilled in this stuff. Ideally if you let me know what the solution is, I will test it and accept your bid (and award the funds to you). Thanks