Deleted Walkcycle, Can i recover it from an older file?

My walkcycle seems to have disappeared. i guess i must have deleted the keys accidently, i have the keys in an older file and was wondering if there is a way to copy the action into the later file?? i reaaallly dont want to have to redo that cycle as i spent alot of time on it and was happy with it.

Thanks for any help/
Josh

You can append an Action from another file, then apply it to your armature.

Thanks! your a life saver, i didnt think you would be able too so i didnt even check lol. Again thanks