Thank you all for your advice. We had a great time. Versailles was spectacular - a bit like the Grand Canyon in that you have to experience it personally; pictures don't do it justice. We did make reservations(7.50 euros each) for a 9:30 tour of the King's private apartments which helped us skip the very, very long lines and had purchased the Paris Museum Pass to cover the admission. Took the 8:00 train out from Paris(very easy). We spent the whole day and did rent a golf cart to tour the gardens which was money well spent.