GP 2010 Customize 3rd Party Screens

The answer may simply be 'no', but I thought I'd throw it out there -

If a client has a third party enhancment installed, but they don't have Modifier, is there ANY way we can import these screens into our in-house GP (which has Modifier), modify them then export the back out to the client system WITHOUT having the same thirdy party enhancement installed in house?

Thanks,

Justin