Recently I had to connect to some virtual HP and since I did not know nothing about this environment, I had to dig a little in order to get some results. Well, I have learn nothing significant but I am sharing it with you anyway :)

How to list your virtual machines:

gzhvm01:/#hpvmstatus
[Virtual Machines]
Virtual Machine Name VM #  OS Type State     #VCPUs #Devs #Nets Memory  Rmt Host
==================== ===== ======= ========= ====== ===== ===== ======= ========
gzhpvm1                  1 HPUX    On (OS)        1     2     4    2 GB        -
rest                     2 HPUX    On (OS)        1     2     4 1792 MB        -
gzhpvm01                 3 HPUX    On (OS)        1     5     4 2048 MB        -
gzhpvm03                 6 HPUX    On (OS)        1     6     3 2560 MB        -
gzhpvm05                 8 HPUX    On (OS)        1     5     3 2788 MB        -
gzhpvm02                14 HPUX    On (OS)        2     6     4 4096 MB        -
gzhpvm04                10 HPUX    On (OS)        1     3     4 2555 MB        -
gzhpvm06                12 HPUX    On (OS)        1     5     3 4808 MB        -
gzhpvm08                13 HPUX    On (OS)        2     3     4 2556 MB        -

How to connect to the console of a virtual machine:

suphvm01:/#hpvmconsole -P protoa1


   vMP MAIN MENU

         CO: Console
         CM: Command Menu
         CL: Console Log
         SL: Show Event Logs
         VM: Virtual Machine Menu
         HE: Main Help Menu
          X: Exit Connection

[protoa1] vMP> CO



        (Use Ctrl-B to return to vMP main menu.)
                GZHPVM1 - Test Machine
Console Login:

Note the commands displayed on the Main Menu, they are very useful and pretty understandable.
Enjoy :)