Hey sorry for the noob question!!

Im updating my server to NQ 1.2.9_b6. In the instal guide it says I need to add +set fs_game nq to my start up config!! Where is my start up config lol, cant see one any where. Can I just add to my server.cfg??

I noes this is a simple thing but I just cant see where it goes, all forums I've checked refer to it but never say where it is or exactly where it goes.

I hav my head around all other requirements this one is simple but i really hav no idea!!!

thanks in advance for any help