setting up a virtualbox 4.0.4 svn repository

[Michael D. Norwick]

Good Day;

I hope to test VirtualBox 4.0.4 on FreeBSD 8.2 amd64.  I have subversion 
1.6 installed from ports.  I have googled and scanned svn.pdf but I 
require some help on importing virtualbox_4.0.4 source or the 
virtualbox_4.0.4 port to my local repository.  I appear to be lacking 
the appropriate URL.  Some basic steps on how to import this source and the
correct URL would be greatly appreciated.

Also, I downloaded the source tar.gz from Oracle's web site and 'make 
configure' halts because of the lack of the as86 assembler.  I believe 
it is required for i386 builds on linux but do not understand what port 
or package provides this functionality on FreeBSD amd64.  I installed 
NASM from ports but that does not seem to be what the VirtualBox 
configure script wants.

Thank You,

michael