Photoshop CS :: Batch Resize?

hey all, i gotta scale my pictures down from 3000x2000 to something a lot less so i can e-mail them and what not. so i got a question, rather than resizing them by hand (all 725 of them), is there a way that i can do this in PScs as like a batch resize or something?

it would save me like, hours of Image>Image Size>25%

thanks :thumb: