Not at all, you can keep the hostname in scraper as it is if you haven't touched it. Just use launch wizard in configuration menu if you want to recheck settings, its self-explanatory guided wizard there. Just need to select system (retropie/recalbox) and gamelist layout type as well as how the drive is connected to computer. (as you are running on laptop, and presumably the games are in internal drive, you would be using the raspberry icon as to tell the program to use network connections; local area network not internet connection, so you will need a router with/without wifi connectivity)