If filename collisions are possible, with pax you can use -k to always keep the existing file, or -u to update (overwrite when the existing destination file is older).
If you need a fancier way to deal with collisions, then you need to provide more info.
Regards,
Alister
---------- Post updated at 10:05 AM ---------- Previous update was at 10:04 AM ----------
Type man find at your prompt and read the section which discusses -exec .