avi vs. mov file

I'm struggling with a few short porno movie trailer clips I have, and they are in "avi" form; if anyone out there knows how to transfer to an "mov" file (if that can be done without spending any money) or even if it's worth the trouble, any help is appreciated. Also, I need help to see how the file(s) look; so anyone who is willing to look at a trailer or two, tell me how fast it loaded, etc., that would be most appreciated.

cookies yes, cool overcast days make me wanna bake, and a batch of GINGER SNAPS are already done; next: "HELLO DOLLIES" - yup, sounds pretty faggy, but it's my grandma's recipe for these delicious squares - chocolate chips, butterscotch chips, pecans, graham cracker, coconut......

any local boys are invited to come over and sample my goodies!