SpaghettiStraps,
It *was* possible in older versions of Paradox written for Windows 3.1, primarily because dialog boxes were (at the time) drawn and then saved as resources. If one had access to a resource editor, it was possible to *very carefully* modify the lookup dialog resource stored in the Paradox program file.
However, times change and I'm afraid it's no longer possible to modify Paradox's internal resources using that trick.
As Mac pointed out, a better alternative is to create your own lookup dialong replacement, which actually ends up being easier than you might think and also provides far more control over the process.
Consider: The default lookup dialog doesn't let you add new lookup values. While this isn't always desireable, it's terribly useful when needed. In addition, you can find out whether or not the user actually changed the lookup value, add conveniences (like incremental searching, custom sort orders, record highlighting), and so on.
Hope this helps...
-- Lance