Lost Admin Password On AD

Hi I Have Lost My Admin Password On the AD and it is different to the local admin account that does not exist on the AD Machine. I am unable to turn off the AD Machine because it is a Global AD At My Work and all of our other offices go online when it is time to go home, is there any way to recover the password with out accessing the server directly but by getting the password off the network. There are no other admin users or power users on the network the admin account is the only one. The old network admin had died in a car crash a few weeks ago and I had been appointed the new network admin. There are no other Admin?s in other offices I would do all the work remotely for our other offices.
Thank you
Your Help will be much appreciated.