First off, I agree with everything that Wire.. said, but he was being way too kind. A good mic can be cheap but what you have is not a good mic and you are expecting too much from it. You can mic a kit very simply with only a couple of mics if they are good and everything else in your signal chain is of quality.
I just picked up a pair of Oktava mk 012 sdc's for $100 at my local GC. These are very cheap, but very good mics to use as overheads. I have them positioned as an x-y coincidental pair and they give me a very nice clean image of my whole kit. I also use close mic'ing of all of my drums just to round it out, but I could get away with just these two overheads a snare and kick mic if I had to. Setting your eq levels is important of course, but you have to have a good signal to begin with.
You're going to have to take a bite.