Exsp 24 Help (drumkits) Options

[psytricks]

I'm having a few problems understanding the sampler on Logic Express...I've got all the basic functions down, but I'd like to start making my own drumkits, and making my own samples... so how do I load up .wav files to use in the sampler, how do I go about making my own drum kits, and is it possible to resample? I know there are a few differences between the express version and the pro version, one being that I can't make my own instruments on the express version (not sure what that means though!) Any pointers in the direction of a tutorial on this sampler, or any help at all would be very much appreciated!