You go to walgreens or whatever store around you that sells pre-paid giftcards ($30, $50, $100 are the most common ones) and you pay the amount for the giftcard + $3.95
When you get home, you take the giftcard and you use it like you would a credit card. So you go to the deposit section and you put the CC # on the giftcard into the place where it says "Deposit using Visa" or whatever.