If you are looking to make the standard gabber kicks, or even go further, start with this download:
http://machines.hyperreal.org/manufa...s/TR909all.zip

This contains wav files of numerous tr-909 clean kick drums at various ADSR settings. It also has a number of other TR-909 sounds included. Quadrafuzz is definitely an excellent effect to run on kick drums for hardcore, however, it can over-digitize them. Basically, just play with those and you'll get what you are looking for. Then, if you have a sampler or program that can allow you to play with the shape/amplitude of the kick on the fly, try using that. I'm pretty Fruity Loops and a number of software packages let you do that.

Edit: Forgot to add, for that effect you want on the last kicks, download Frohmage. It's a free filter plugin from the makers of predatohm and ohmboyz which are also excellent for distortion. For a free plguin, frohmage is great. You can autobind the cutoff knob to respond to any midi data when the audio is running. So, when your track is playing the kicks, if you load up frohmage on the bus for the kicks, you can get that nice high-pass filter sound that gets used a lot in hardstyle and the newer dutch gabber tracks. Or, you can go all out, run your kicks through a guitar distortion pedal, and then high pass the results. You can gets some ear-bleeding sweeps that way which sound ****ing great in my opinion. Though, I'm sure most would beg to differ. ;)
Frohmage: http://www.ohmforce.com/UseFreeSoftw...mp;productId=6
Just pick the version you want from there.