Rocky start...Paypal but no Credit Cards
After some emails from you guys and test runs ourselves we see that the frontend (Shopify) was not communicating with the Payment Processor (Paypal) for Credit Cards correctly...because of something we fumbled in the Business Verification (anti-fraud stuff Paypal does). We got it all corrected but Credit Card payments wont be active until 24June2013...Sorry.
You can still pay with your Paypal accounts though!