PBase

Allright- i asked this once already, if I can change my username. But if I do, would it be possible to also engineer it somehow so that if someone tries to go to the page with the old username, that they are re-routed to the new one? If all that can be done, could you change-

http://www.pbase.com/hrogthar

to

http://www.pbase.com/ak


Hope that one's not taken already, anyway.Thank you so much.