Use gadgets image viewer to use a mass export to a folder of all the images you want to put into your other wil.
These images should be in succession and you need to not fiddle around with them - just keep them in a folder.
Next open up the WIL editor and open up the wil you want to import the images to. Then add the images to the wil by the (add?? or open??) button and select all of them once again making perfectly sure you don't click one image twice or something. You also don't want to click the middle of the wil you've opened because it could extract your images into the middle of the wooden sword attack animation or whatever. Import then into the end of the wil.
Sorry - its so hard to understand - I haven't got a wil editor on my comp atm but the most important thing you need to no is to use gadgets image viewer and wil editor (and of course to do all of the above).
Might be an idea for others to help instead of using silly answers btw - you're contributing to the thread 'spam' even if he didn't search or not.