After spending most of yesterday afternoon translating the german forum, I realised it had already been done (Doh!

)
So I didn't really figure anything out I just followd the tutorial thingie e.g. downloaded the Wait! app
Copied the CAB to my devices storage card
Installed (ignoring the error message)
downloaded the WaitSelect app
Unzipped the WaitSelect.exe and copied it to my storage card (same folder as above)
downloaded some images (shooting neo & dancing banana)
Changed the name (mui bit) to ban & neo
Copied the files to the above storage card folder.
Changed the WaitSelect 'File from path' to reflect the folder path
Then selected an image and soft reset when prompted.
Hey presto Shooting Neo 8) and mangled up dancing banana

(some thing to do with the animation timing in PPC2002 or something!)