for the record, I have tested the coser-installer
http://www.aetey.se/dl/coser-1.5-20090214-linux-ia32-0 on plain FreeBSD (ia32, 7.0, with linux.ko loaded, no Linux compatibility
packages) and it worked out of the box, as expected.
Just to let you know if someone is thinking about running servers
on FreeBSD.