Hi Guys cheers for your responses

I've got it working on the XP partition of my macbook but it still won't work on my macPro. I think there is a folder called _MACOSX in the corelib download that shows up on a PC but doesn't appear to be there when I look at the same corelib download on my mac... Very strange...

In answer to the question I didn't copy the corelib files anywhere apart from applications/Flash/Config/AS3/Classes. I'd actually got the wrong class path as well.

package com.adobe.images is already inside the class (as previously stated) so the classpath in flash needs to point to the src folder inside the corelib download...

Thanks for your help...