The other day my friend came over to my room (college dorms) and saw me playing Gal Civ 2, and I was telling him what an awesome game GC2 is and such. Today he came over and wants to borrow the game from me to give it a try. My initial reaction is "Great! Finally someone in my dorm can realize how great the game is!

"; my second reaction is "Oh no, how am I suppose to play if I let him borrow the game?!

".
I know I read somewhere that once you have GC2 installed on your PC, you never need the disk again. So would it be OK if I install the game on his computer so that he can try out the game without the CD? What are some things that I need to be careful about before I do that?
Of course, I am going to make sure that if he likes it, he better gives his support to the developers by eventually buying it from a store. But for now I just want him to have a taste of GC2.