I've been a professional drummer/percussionist and drum computer programmer all of my adult life.

Here are a couple of inexpensive ways to get excellent sounds for your tracks:

1) buy a used Roland Pad 80 midi drum controller (cheap on e-bay usually) or even a set of inexpensive drum triggers
2) hook it up to a used Alesis D4 or D5 one spaced rack module (this is just a unit that has tons of sampled drum sounds
in it.
3) run those sounds through some inexpensive guitar effects pedals to fuck them up (distortions, overdrives, modulation pedals,
pitch shifters, digital delays, et. al.
4) record


or.....................use a fairly inexpensive PC computer (P4, 1000 mghz or better) and buy the program FRUITY LOOPS Producers
Edition v. 6.0 (which at $150 is one of the most inexpensive, sample based DAWs on the market place).

It is incredibly intuitive to use and has tons of sound design options that are easy to understand.
It's all grid based (though you can sample in real time through it and use midi and VST instruments as well)
so it's visually a piece of cake (think those really elegant early Roland drummachines with the grid orientation----TR 808 and TR 909)

Also, for what it's worth, I have assembled a really good DVD of hundreds of great drum sounds from the electronic world, the industrial world and the acoustic world (including real drums, real percussion, percussive sound effects and my own sound designs). I spent about 7 years combing the web; raiding friends sample CD collections, buying all the issues of
Computer Music and Future Music from the UK that always have tons of free drum samples on them and sampling my own extensive collecction of drum machines from the past: I have 20 pre-digital drum machines in my collection including the 1953 Wurlizter Side Man
which is pre-rock and roll!!!

Also, as a studio drummer and producer through the late 70's up until the present time, I also know a lot of about drum sounds, tuning, processing, etc. so I really put a lot of energy into making this collection. I made it for myself not to sell, but I've had a lot of requests from people who've heard it to sell it, so I sell just a very few copies each year of it and am not especially into hyping it.

It is organized by instrument and by types of sound, so it is very quick to audition sounds in Fruity Loops or a similar sample based
drum machine (either soft or hardware oriented)

I sell it now for $25 through PayPal (my address there is looppool(at sign)cruzio(dot sign)com )

Yeah... So I was in Amsterdam kicking it with some folks after m-fest and I knew this fellow who recounted this story must have been high... Hmm.. Oh wait.. nevermind.... ;P