You could download the source and install it as KM says, but the *BSD's offer a packaging system which few people seem to really know about. I have outlined the whole thing with tons of cool pod and links in my node, OpenBSD Package Manager in perl. It pertains in specific to OpenBSD, but the concept is the same. The programs you want to look at are:

• pkg_add(1)
• pkg_info(1)
• pkg_delete(1)

Yup, you have manpages too! :D

brother dep.

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Laziness, Impatience, Hubris, and Generosity.