Retrieving public key from smartcard

[saschainlondon at gmx.net]

Hi everyone, 

I am using one of these g10code/PPC OpenPGP cards.
Works (nearly) perfectly at home (where I created 
my keypair). 
Now I would like to use the card with another PC.
Unfortunately I have only my OpenPGP card and no
copy of my public key. 
How is it possible to retrieve the public key
from the card and set up GnuPG to work with
this card that is already set up (I do not
want to create a new key pair!)

Any help appreciated! Thanks very much!

Sascha

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