The quickest thing is to have a large dynamic EQ (30 band) at your disposal (I think cool edit has this) and bring down the low end to some degree to ease off the heaviness of the kick. Remember, an EQ is a filter.
Find the frequency range that you're most comfortable with by band passing the kick sample through the EQ. In the EQ you should cut and boost through experimentation to find out what's right.
If there are other overtones, like a "click" that is inherent in the drum sample, it'll take some tricky EQ'ing to get by it. Or you could compress that frequency band and hope that it mollifies the attack and sound of the kick's "click."
Try a frequency analysis with Cool Edit (I'm sure it has it) and then see in what frequency range there is the most bass saturation.
Sincerely,
God