keyboard and mpc problem help please

whats good people! i need help asap, my main problem is making a beat on the mpc 1000, with my keyboards which is a casio workstation 3000 and novation x-station and not being able to switch sounds, for ex, if i have a bass line on track 1, midi 1a, how can i change the sound to somethin different without changing the bass line sound on track one, its buggin the hell out of me, i tried so many things, i also have a firebox, m-aduo midisport 4x4, and i use cubase, how can i set it up so i can jus rock, please someone help me out as soon as u can,

not sure if its muiltinumbral or whatever, how do i find that out? doesnt say in the manual of them, if its not that means i cant do it or somethin? so wha i need to do is program the sound that i want on the keyboard into a midi channel on the keyboard, and then with the mpc?

Casio wK-3000 multitimbral
Novation X-station monotimbral
Be warned I do not own either of these kb but a quick check of their sites shows this. If its multitimbral you can assign a different sound to each midi ch. and record MIDI into the 1k, ie.
bass- 1A
horns-2A
drums-3A and so on.
On the other hand, the X-station has 8 voices but can play/send midi 1 voice at a time so assign that kb to 1 ch. hope that helps

thnx. im gonna give it a try and get back to you guys. peace

dang its still givin me problems, i duno if its the keyboard or wha, maybe it is, cuz im not to sure on how to change the midi channels on the keyboard on the casio wk 3000..

hey!!!!!!! i got it!!!!!!!!!!! happy as hell lol,... damn i was tryin to figure that out for a while, its easy to, thanks you guys, but not my stinking problem is tracking it on to cubase, from the keyboard , and mpc, any idea on how to do that, let me know thanks again peeps 1