Havenco is gone. They never had more than a few servers hosted there (I managed one of them back in 2001-2002), and as far as I know, they aren't accepting new orders. They had pretty constant problems when they were up, due basically to not having the funding required to do what they were doing.

Ryan Lackey, the former CTO of Havenco, had a postmortem of the company up for a while, but it seems to be gone right now.

it used to be hosted on metacolo, which seems to also be gone. but i found another copy here:

  http://www.securitytechnet.com/resource/rsc-center/presentation/Defcon/11-2003/dc11-havenco.pdf