AL
AFAIK, there is no way to set the creation date of a file other than to execute a copy.
As for setting the DateTimeOriginal EXIF property, that's a pretty straightforward script.
If you'd like to take a shot at it, I'll help you where I can. If you need someone to write it, perhaps one of the scripters around here will take it on for you.
The basic process would be something like:
var kids = app.document.thumbnail.children;
for ( var i = 0; i < kids.length; i++ ) {
var mdObject = kids[ i ].synchronousMetadata;
mdObject.namespace = "http://ns.adobe.com/eixf/1.0/";
var d = new Date( mdObject.DateTimeOriginal );
d = new Date( Date.parse( d ) + (1000*60*71) );
// at this point - format the date -
// then set it
mdObject.DateTimeOriginal = dateString;
}
Bob
Adobe WAS Scripting