You will need to bring upgrade the copy of Recorder to 6.17. Probably best done on the original machine if possible. Then take a backup.
Install R6 Version 6.17 on the new machine. You will need to install SQL Server 2008 first (see www.Recorder6.info). Choose a version of SQL server 2008 which includes the Management Tools. As you already have a site id and security key version 6.17 can be downloaded from www.Recorder6.info/Standalone.zip.
Make sure R6 is working Ok. You can key in data as a test if you wish.
Then restore from the backup. You may be able to use the R6 Restore, but if not use the restore in the Management tools. If you need help with this please ask.
You will also need to copy over the users files(Rucksacks etc). If there is Mapdata involved then depending on what it is some other copying and processing may be required.
Mike Weideli