Yahoo! has just released a service called Trip Planner. This is a pretty fantastic time-saving tool to plan your trip, online. Here is an example. Pick things to do, hotel to stay, restaurants to dine. Every location have a map reference. You can then print the information off and use it as a guide. You can also share this with friend and invite them to plan the trip together:
What is Yahoo! Travel Trip Planner?
Trip Planner is a tool on Yahoo! Travel that lets you save hotels, attractions, restaurants, maps and more to a customized travel guide. You can add travel dates, your own comments, even bookmarks for other sites to your trip. Once you’ve created your trip, you can print a copy to bring with you, or access it from any computer with Internet access.