Depends on what kind of sound you want. If you want to play a solid rock track, you'll really need the kick and snare to shine. Put a dynamic mic in front of the kick, and a condenser overhead, pointed towards the snare. If it's for a jazz, or acoustic song, 2 overheads will work okay. You'll have to experiment a lot with placement. You could also put one mic on snare and one on kick, record the track without cymbals, and add those later. But chances are, none of these will sound great.
Honestly, you'll save yourself a lot of time and frustration if you just get a soundcard with more inputs.