Hello Lenny,
Just join the Solton group and ask there.
There are a lot of ms 40 users on that list
and most of them are very helpfull..and probably some of them will have a ms 40 ins file for you..for cakewalk.
http://www.egroups.com/group/solton
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Keyboards/Sound Units: Kurzweil 2600S, Roland VR-760, Acces Virus C, Roland G-800, Akai AX60, Minimoog, Machine Drum, Roland R8-M, mediastation x-76