Acceptable forms of payment:
I accept Mastercard, Visa, Amex and Discover Card through Paypal, a secure transaction site. (Paypal offers other payment options, such as electronic check processing too!)  At checkout, you'll see a link to go to Paypal and fill in your own information on their site (unless you already have an account, then you just have to sign-in).  The transaction is quick to complete, is secure, and will make a fast turn-a-round in the ordering process.