MPC2000XL+Reason 4.0

How do i set up mpc to reason. I have everything setup i cant record the sounds i hear on mpc in reason. HELP

You need to be more precise.
What do you want to record in Reason - midi notes or audio ?
Do you want to sync it with Reason or just record from mpc without synchronisation?

i would like to send midi to reason for instance when i hit me drum pads it triggers the sounds up in reason so i would like to record sounds i hear on them in reason from the pad. the only way it records is when i hit the keyboard then i see the midi notes in reason being recorded.

So basically you want to use your MPC to control reason? Your gonna need some kind of USB Midi interface. This kind of thing -

http://www.dv247.com/icat/USB+MIDI+Interfaces/2975/