any suggestions on mounting tweeters?

Im a little worried about drilling holes in my door panels let alone other peoples panels..

ANy tips or suggestions on how to go about this?

I've had good luck with two-sided tape. I made sure both surfaces were clean, and they've been holding up for over a year now.

Plus, I use 3M tape...

Well when you flush mount them, what keeps them in the door? Would I be better off dropping some epoxy on the back of them to make sure they stay in there?

I ordered a set for my buddy, maybe I will get an idea of how it all works when I actually get them in my hands.

most tweets will come with a flush mount kit.  They will have a bracket to attach it to the door panel.  The other option is hot-glue or epoxy. 

The tweets are placed as close to the woofers as possible for staging and to prevent separation of the two speakers.  The last thing you want to be able to do, is sit in the vehicle, close your eyes and be able to point out, "there's the tweet, and there's the woofer."