Re: Micing up a drum kit for live performace.
Yea, we need more detail to help with this.
How many mic's do you have and what kind are they? How many channels on the mixer are available for your drums? Then we can talk room size and shape, etc..
Some gig's I just mic the kick, snare, and one overhead, bigger gig's I have a mic for all the tom's, kick, snare, hi-hat, ride, 2 overheads, and sometimes we use another mic up high and about 3 feet in front of the kit for a ambiant addition to the mix.
Usually just micing the kick, snare, and an overhead works very well.
Hope this gives you some ideas on where to start anyway.