Pete,
What do you want to record drums for (ie. what style?)
What size kit
How many seperate sound sources can you record at the same time?
Do you have preamps? Mixer? Phantom power?
You can mic a kit with one mic to 20 mics (20 would be overdoing things though).
General principles are:
1 mic - needs to pick up whole kit sound, so best a condensor or a ribbon, is unlikely to give you a usable rock sound, might work for jazz. Cheap choices would be any cheap LD condensor eg. Studio Projects B1 or MXL v67
2 mics - Kick and mono overhead - use overhead mic as above and for kick maybe at pro25, Peavey 520i
3 mics - Now you're getting stereo! - Stereo overheads (B1, Oktava MC012, MXL 603, etc) and kick mic as above
4 mics - Now you're getting an sm57 for snare as well as the 3 mic setup.
From here you can add close mics to each tom (dynamics generally, though condensors work too, they just don't like being hit by the drummer at all, and may break if this happens), room mics (whatever takes your fancy), hi-hat mic (usually SD condensor).
Good luck,
Steve