[rescue] hp9000 questions

[alex at lava-net.com]

Hi,

Over the next couple of weeks I'm rescuing a couple of hp boxes (a 
9000/715 and a Visualise c180).  I have absolutely no experience with 
these machines so I have a couple of questions.

Can I get a serial console on these? both don't have 
keyboards/rodants/monitors, so the only way I can access them for the 
time being is over serial.  If this is possible, how does one go about 
doing it?

How easily are keyboard/rodant to come by for these? I'd eventually like 
to get one for each one of these.