pkg_add wine-fbsd64.8-1.3.6,1.tbz
Wine requires FreeBSD 6.3 or above; FreeBSD 7.0 or later is strongly
recommended. For FreeBSD 6 you may want to consider the patch(es)
provided at <http://wiki.freebsd.org/Wine>.
Some ZFS tuning guides recommend setting KVA_PAGES=512 in your kernel
configuration. This is incompatible with Wine. The maximum possible
is KVA_PAGES=500, which should still be enough for ZFS.
The port also installs some of Wine's documentation which describes
additional programs that are not in the manual pages under
/usr/local/share/doc/wine
There is more in the source tree but the others are only useful in
conjunction with the rest of the source tree.