Okay soI have reason and I bought a keyboard called ekeys 37 by evolution the only problem is that when I use the redrum with my keyboard it starts at the 7th one (I press the first whit key on my keyboard and it plays the 7th slot in redrum). I tried using overide edit mode to change the maps but it won't let me record it when I do. plz help me because I really only use the keyboard and I need my redrum playing it.

I don't know anything about that keyboard so I'll try with the stupid answer first:

Switch you keyboard down an octave. (on the keyboard itself or through OMS- I don't know)

Another solution (but a little of a pain)

Is just use the last channels of Redrum (don't use the first 6)
You can open multiple Redrums within Reason 3.0 - so you can just back out the kick and snare on one redrum, then do the hats, etc...with another Redrum within Reason.

or put the notes in the sequencer instead?