D.C. stands for delivery confirmation number. It is a tracking number that you can enter online,and track each move on where your package is at. When you ship things within the U.S. via Priority Mail, your reciept will show you your tracking number which is free of charge. But if you ship it a different way-say first class mail, you would have to tell the postal worker that you would like to get a d.c. number. After mailing off your exchange, just pm me the d.c. number and I will keep track of the mailing.
I sure hope so, shipping detail hasn't changed locations, but says "parcel post has taken over shipment" rather than UPS! I am very sorry for the delay, I honestly didn't realized that the sipping would take this long from the site!