How do I move EXISTING emails in my Yahoo inbox to a folder automatically?

I know a filter will move the new ones automatically but I have a bunch that have already come in and are sitting in my inbox. Is there a way to have yahoo search through my inbox and move them automatically?|||Go 2 your action box click it,and when u see "move", it'll show u the options of spam,inbox,trash,etc.just click which folder that u would like 2 move your emails 2,make sure u check the emails that u wanna move,cause it will end up transferring them all.