How can I use Nessus on FreeBSD/Sparc64

[Linyin]

Hello:
    I use FreeBSD 6.1 on Sun U5 and I wanna run Nessus.
    But I can't fetch the packages for Sparc64 platform,may I buitd it
via ports,and there are many software,which I'll install?

-- 
Regards

Linyin SooChow China
http://eaa13.8866.org/~linyin/