To install this, simply drag and drop Lazer to your resources folder.

Feel free to rename it

Go into your server.cfg (or resources.cfg if it's there) and start or ensure the name of the folder (CaSe SeNsitIVe!)

by default you should have either:
start Lazer
or
ensure Lazer

Once done start your server and voila! Enjoy a realistic handling'ed Plane! :)
