you just need your dad to send you a copy of his drivers license and have him either fax you his written permission to register the vehicle in DC while you are at the DMV (this informal fax granting permission needs to have his signature on it), or yes, have him write out a statement granting you permission to register the vechicle in DC and have it notarized by someone and mail it to you and then you take it into the DMV. that’s it. an annoyance? certainly. i had to do it as well last July 2011, but the DMV representative i spoke to on the phone never told me about the written permission part until i was there and had waited forever. hopefully the DMV hasn’t come up with some new unposted rule that you will only find out about after you’ve waited in line for an hour. good luck!