Smooth ride?

My wife has a 97 Civic LX with ~63,000miles on it. We will be taking the car on a cross-country trip soon. I was wondering if there was anything that can be done to give the car a smoother, more comfortable ride. I realize it's no Cadillac, but anything that can be done to make it more comfortable for a long trip would be appreciated. Thanks!

Change your oil before you leave and keep your tires infalted properly. If you want, you could get them balanced before you leave...