Yes there is , you have to have action replay for the original xbox , then xsata for the xbox 360 the xsata is 40 at codejunkies.com and the action replay is also on codejunkies.com and it is very simple you have to get the saves from the old xbox and then connect your 360 to your computer using the xsata and xplorer 360 and then you have to inject the xbox saves into the right spot , if you want I can make a tut over the next few days , i might make it anyway
http://forums.afterdawn.com/thread_view.cfm/472509#2876032 written very well by fuzz (gj) you can go from the folder part if that makes sense