Are you wanting to keep both Launchbox installs completely in sync, including general configuration settings, themes, game meta data, etc? If the answers is yes, and this is probably the easier of the answers then you can just copy any changes made on one system to another (assuming file paths are relatively the same). You might look at applications such as SmartSync Pro or Toucan that are designed to keep file systems in sync across computers. If the answer is no, then you can still use these applications for syncing but you will need to fine tune their configuration to include only specific files or directories or exclude specific files or directories. They both support this type of configuration. You will just need to determine what files you want/need to sync.