@keropi:
You should see the card in showconfig, though it would probably listed as unknown, only identifying itself with Prod=5001/2 or Prod=5001/3. You should also be able to see it in the "Expansion Board Diagnostic" part of the early startup menu (hold both mouse-buttons pressed right after booting).
As the HyperCOM3Z only is half length Zorro board, there is actually a possibility of inserting the card the wrong way. If it has its circuits on the same side of its circuit-board as a normal full length Zorro board it is inserted right. It could be bad for your computer if it is inserted the wrong way, so make sure it's right.
Btw, you can download the latest drivers for it
here and find some info about it
here.
Then to see if the serial communication is working, a good idea would be use a terminal program on both sides and see if it works.
/Patrik