EXS 24 Logic Sampler Users Group

I'm using Logic Express 7. 
I've recorded some samples and woud like to now map out and 
play back via a keyboard thru exsp24mkII (part of the LE7 package).
I'm new to this so bear with me, but there just 
doesn't seem to be enough info in the manual to help me do this 
(play back custom samples). Is exsp limited? Is there another tool?

Would someone tell me how to do this or point me to another 
rescource please?

Thanks for your help.

peace,