You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.
"I made some comments in the initial personalizing interface online- I said that I wanted help with formatting, changing font colors, and adding text to the back of the program. The person who made my proofs called me directly to verify my wishes. She also made some stylistic changes and edits like suggesting a darker font color for readability. Excellent customer service and I am so pleased with the result."
"I was able to personalize my program with my wedding colors -- pewter and emerald. They were very accomodating in special requests and helped rearrange the layout several times. Quick response time and completion for a beautiful product."