Checks are accepted, email info AT zenwareonline.com for address, (replace AT with @) but I highly recommend PayPal for web payment. They have over 100 million members in 56 countries, with backing by some of the largest banks in the world and $100,000 insurance by Travelers. If you are an international customer signing up, look carefully for the link to the international page, or you will find yourself on the US page, with nowhere to put your country code.