1) stop the lansweeper service
2) take a backup of the lansweeper database
3) restore the database on your new server
4) create user lssqluser32 and make sure it has the appropriate rights to the database
5) change the lansweeperservice.exe.config file to let the website connect to the new database
6) change the web.config file to let the website connect to the new database
7) start the lansweeper service