first, get the kick sounding good in the room. if the kick sounds bad in the room, it'll sound bad on tape. make sure it's tuned properly. and then assess the kick itself--if the kick is a crap drum and sounds like ass to begin with, it's hopeless. there's a reason studios invest in a high-end drumset--they just plain record better. good drums record well.....bad drums record poorly.
second, get the drums off the floor. you have no hope getting a decent kick sound with the drums sitting on a concrete floor (if you have one). a wood floor is better...and even better if you have a subfloor, but i'd recommend at least a 6-12in riser for your drums (depending on your ceiling height), if not more.
third, get the room sounding good. it's hopeless to get good drum sounds in a bad sounding room. high ceilings are best.
that said, i like to take the front head completely off. make a little tunnel with some packing blankets and put the kick mic up in there if you're using just one mic--that helps isolate the mic from cymbal bleed.
usually, i use 3 mics on kick:
1) my EV RE38 inside the kick, about 6in off the head, right inline with the beater (this gets a good compromise between the inside the drum/shell resonance and beater attack). this mic is a sister of the EV RE20.
2) an sm57 (or equivalent) on the beater side of the kick, off axis, aimed at where the beater meets the head, and flip the phase. this gets the beater slap.
3) a condenser, about on level with where the front head would be if it were there--sometimes as far as 4ft back, but usually closer in. this gets the "boom" that develops a little ways off the head and is prominent in the shell resonance. be careful with this one--use a pad if you need to. aim it wherever it sounds best.
when i combine all of them, i get a rather workable kick sound--lots of options and places to go with it.
usually i mult one or more of the above tracks once they're in the computer and radically eq and/or compress the bejeezus out of the multed tracks and slide those up underneath the "raw" tracks.
drums are by far the hardest thing to record--it's really like recording a group of instruments rather than one instrument. it takes a lot of patience and skill, and usually a significant amount of bourbon.
good luck!
wade