What is it with these new coins launching and asking you to import your Bitcoin wallet? Maybe I'm missing something but this sounds very risky, no?
You only have to import your wallet if you are interested in claiming (in a non spending way) credits from Bitcoin.
http://credits-currency.org/viewtopic.php?f=18&t=19A way to do the claiming in a completely safe way is described in the link above.
I would recommend you to also look through the Getting started section on the forum:
http://credits-currency.org/viewforum.php?f=18