!!
As far as the application goes, I find that it is memory and CPU intensive on Debian. I have not run it on FreeBSD as of yet. You would probably be better off running XP or what-have-you in Qemu- personal preferences, use whatever you want- and running the said needed application there.
By the way,
http://packages.debian.org/unstable/main/brewtarget . Looks like the concept of "free as in beer" is slowly becoming a reality.
FreeB(eer)S(,)D(uh!)
!!