change of login

hello. Our company would like to change login. The girl that was registered here under galina and password selena and used our e-mail info(at)orange-graphics(dot)com(dot)ua worked with us, but now she left us. That's why we would like to change login into bodeman and password into Gfh0kM, but leave the same e-mail, because it is our company's e-mail info(at)orange-graphics(dot)com(dot)ua .Could you help us? looking forward to your answer