Although I totally agree with Gidman that generally 4 mics is a minimum... you can, for acoustic stuff being cut live-off-the-floor with limited resources, get a good sounding drum kit with 2 mics in a reasonable sounding room.... you need to find the room's sweet spot, then place an XY pair of condensers at that spot - essentially capturing the sound of the drums in the room.
You may need to dampen the room a bit (to minimize unwanted resonances) - carpeting - thick old drapes, but you should get usable results. It's especially useful on acoustic-oriented material like jazz since what counts is a good sound right in the room it's played in (ie - you're going for the natural sound of the drum kit - minimal effects - and of course, the kit's setup is absolutely critical in this situation).
Bruce Valeriani
Blue Bear Sound
[Edited by bvaleria on 09-13-2000 at 07:52]